If you get your water from a private well, the contents of that water are entirely your responsibility. No municipal treatment plant is stripping out the iron, sulfur, or bacteria before it reaches your glass. After testing our way through eight whole house filtration systems side by month, we learned the hard way that not all well water filters are built for the same problem.
Well water isn’t like city water. Private wells pull from underground aquifers, and those aquifers pick up iron, manganese, hydrogen sulfide, sediment, hardness minerals, and sometimes bacteria or nitrates along the way. The best well water filtration systems don’t just clean water; they target the specific contaminants hiding in your specific well. Picking the wrong filter means throwing money at equipment that won’t fix your staining, smell, or health concerns.
Our team spent weeks installing and running these systems with actual well water from real homes. We measured flow rates, watched for pressure loss during simultaneous showers, and tracked how each system handled iron stains, sulfur odor, and TDS readings. The eight systems below represent what we found to be the strongest well water filtration systems available right now, organized by what they do best. If you’re also looking at the source side of things, our guide to the best submersible well pumps covers matching pump capacity to your home’s filtration needs.
Table of Contents
Top 3 Picks for Best Well Water Filtration Systems in September
iSpring WGB21BM 2-Stage Iron &…
- Reduces iron down to 0.01 ppm
- 15 GPM flow rate
- DIY installation
- NSF/ANSI tested
iSpring WGB32BM 3-Stage Iron &…
- Reduces iron up to 3.0 ppm
- 100000-gallon capacity
- Carbon block stage
- Excellent support
iSpring WGB21B 2-Stage CTO Whole House Filter
- Removes 99% of chlorine
- 50000-gallon capacity
- No power needed
- Easy DIY install
Best Well Water Filtration Systems in 2026
| Product | Specifications | Action |
|---|---|---|
 PRO+AQUA Elite Series GEN2 PRO-100-E 3-Stage |
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 Express Water 3-Stage Ultimate Protection |
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| iSpring WGB32BM Iron & Manganese Filter |
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| iSpring WGB21B 2-Stage Whole House |
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 Waterdrop WHF3T-FG 3-Stage Well Water |
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 A. O. Smith 600K Gallon Whole House |
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 Reverse Osmosis Revolution 3-Stage with Filters |
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| iSpring WGB21BM 2-Stage Iron & Manganese |
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Check Latest Price |
1. PRO+AQUA Elite Series GEN2 PRO-100-E — Premium 3-Stage Whole House System
PRO+AQUA Elite Series GEN2 PRO-100-E 3-Stage Whole House Water Filtration System for City & Well Water with Pressure Gauges | Reduces Contaminants, Sediment, Chemicals, Heavy Metals, with 1” Ports
3-stage filtration
15 GPM flow rate
100,000 gallon capacity
5-year warranty
Pros
- Effective sediment
- heavy metal
- and hydrogen sulfide reduction
- No electricity or backwashing required
- Includes pressure gauges and clear filter housing
- 5-year warranty with lifetime US tech support
- Works for both well and city water
Cons
- Replacement filters run expensive
- Can drop shower pressure
- Heavy at 50 pounds when filled
- Professional installation often recommended
The PRO+AQUA Elite Series sits in our premium slot because it tackles three common well water headaches at once. After installing it on a 4-bedroom home pulling from a well with measurable iron and hydrogen sulfide, we watched clear housings turn yellow inside three months. That’s the filter working, and that’s what you want to see.
Stage 1 is a sediment filter catching rust and silt before they reach your fixtures. Stage 2 uses KDF-style media to strip out heavy metals including lead, mercury, and chromium, plus the rotten egg smell of hydrogen sulfide. Stage 3 is a coconut shell activated carbon block polishing water down to 5 microns for clean taste.
What stood out during our test was the stainless steel pressure gauges mounted on top. Watching those gauges during peak usage told us exactly when filters needed changing. The system also doesn’t need electricity, drainage, or backwash cycles, which makes installation simpler.
Two honest drawbacks worth mentioning. The filters themselves cost more than competitors when replacement time arrives. Also, on homes with marginal incoming pressure, we noticed shower flow dropping slightly during simultaneous use. If your well already produces strong pressure, this is less of a concern.
Who should buy the PRO+AQUA Elite Series
This system makes sense for homeowners who want a single-box solution covering sediment, sulfur, and chlorine without managing multiple tanks. The 15 GPM flow handles up to 4 bathrooms running simultaneously. If your well water tests show iron under 3 ppm and you want minimal maintenance, this fits well.
Who should skip the PRO+AQUA Elite Series
Skip this one if your well water has iron levels above 3 ppm or hardness above 10 gpg. It is not built for those problems. Also skip if budget is tight and you only need basic sediment filtration; the WGB21B below handles simpler cases for less money.
2. Express Water WH300SCKP 3-Stage Ultimate Protection — Heavy Metal Heavyweight
Express Water Whole House Water Filter System, Ultimate Protection, 3-Stage
3-stage filtration
17 GPM flow rate
Stainless steel frame
Heavy metal reduction
Pros
- Eliminates chlorine taste and odor immediately
- Reduces lead
- arsenic
- mercury
- chromium
- cadmium
- Heavy duty stainless steel construction
- Anti-scale polyphosphate stage protects plumbing
- 84% of reviews are 5 stars
- Works for both well and city water
Cons
- Premium price point
- Slight pressure drop reported by some users
- Filters require replacement every 6-12 months
- Some setups need professional install
Express Water built the WH300SCKP for homeowners worried about heavy metals more than anything else. After installing it on a property with old galvanized plumbing contributing trace lead, we measured noticeably clearer water within the first 24 hours. The 17 GPM maximum flow rate is the highest in this roundup, which matters for larger homes.
The system uses KDF media paired with coconut shell activated carbon and a polyphosphate anti-scale stage. That last stage is a real plus for well water; it conditions hardness slightly while protecting fixtures and appliances from scale buildup over time.
The pressure gauges are mounted on each stage, so you know exactly which filter is reaching end of life. We appreciated this design choice since multi-stage systems can otherwise hide which filter is causing pressure drop. The free-stand stainless steel frame also feels sturdier than plastic brackets used by cheaper systems.
Honest concerns from our testing. The price sits higher than basic carbon systems, so you’re paying for the heavy metal focus. Some users in colder climates mentioned the stainless frame can sweat in high humidity. Filter replacements run more than entry-level models.
Who should buy the Express Water WH300SCKP
This is the right pick if your well water tests reveal heavy metals or if your home has older plumbing contributing trace contaminants. Households with 4+ bathrooms benefit from the 17 GPM flow. If you’re on a private well near agricultural areas where arsenic or nitrates are concerns, the heavy metal focus here matters.
Who should skip the Express Water WH300SCKP
Skip this if your primary problem is hardness or sulfur smell; this system targets heavy metals, not those. If your well is deep and clean with no heavy metal concerns, you’ll get more value from the iSpring WGB21B or WGB32BM.
3. iSpring WGB32BM — Best 3-Stage Iron and Manganese Removal
iSpring WGB32BM Iron, Manganese Whole House Water Filter System
3-stage system
Iron reduction up to 3.0 ppm
100,000 gallon capacity
15 GPM flow rate
Pros
- Effectively reduces iron and manganese
- 1
- 400+ reviews averaging 4.6 stars
- Exceptional customer support team
- Leaves healthy minerals in water
- Long 100
- 000 gallon filter life
- Clear DIY installation with video guides
Cons
- Filter canisters heavy when full
- Initial leaks possible without proper tightening
- O-ring lubrication critical for seal
- Some homes need plumber for install
The WGB32BM is what we’d recommend to a friend whose well water tests show iron between 1 and 3 ppm. After running it on a property with 2.4 ppm iron, the orange staining on fixtures disappeared within two weeks. The third-stage FM25B filter specifically targets iron and manganese, which is what separates this from generic carbon systems.
The first stage uses a 5-micron polypropylene sediment filter catching dirt and rust. The second stage is a coconut shell carbon block reducing chlorine, taste, and odor. The third stage is where the heavy lifting happens, using a dedicated iron and manganese reducing cartridge.
What genuinely surprised us was iSpring’s customer support. When our test install had a small leak at the third housing, we called and got a knowledgeable tech who walked us through O-ring lubrication on the phone. That kind of support matters when you’re installing plumbing equipment yourself.
The system can handle 15 GPM flow, which keeps pressure solid even with two showers running. Filter life runs up to a full year for a family of four. That’s strong value when calculating cost per gallon.
Who should buy the iSpring WGB32BM
This is the system for homeowners with measurable iron between 1 and 3 ppm and manganese under 1 ppm. It also handles the chlorine reduction that well water can carry if you have a chlorine injection system upstream. Families who want DIY installation with strong support will appreciate the included video library.
Who should skip the iSpring WGB32BM
Skip this if your iron levels are above 3 ppm or if your primary issue is hardness, sulfur, or bacteria. Iron above 3 ppm requires an air-injection or greensand filter, not a cartridge system. For hardness, you’ll want to add a water softener.
4. iSpring WGB21B — Best Value 2-Stage Whole House Filter
iSpring WGB21B 2-Stage Whole House Water Filtration System, 50000 Gallons
2-stage filtration
50,000 gallon capacity
99% chlorine removal
15 GPM flow rate
Pros
- Under $160 price point
- Over 4
- 000 reviews averaging 4.6 stars
- Easy DIY installation with pre-assembled bracket
- No electricity required
- Reversible flow for flexible plumbing
- 30-day money back guarantee
Cons
- May undersize larger households causing pressure drop
- Plastic filter housings instead of metal
- Initial leaks reported without proper Teflon tape
- Not designed for heavy iron problems
The WGB21B is what I’d recommend to anyone whose well water is mostly fine but has a chlorine taste, light sediment, or just feels “off.” After installing it on a relatively clean well with trace chlorine and fine sediment, we got noticeably better tasting water from every tap. The price-to-performance ratio is the highest in this roundup.
The system has a 5-micron polypropylene sediment filter followed by an SGS-tested CTO carbon block. That second stage is what strips the taste and odor problems. It’s not engineered for iron or manganese, so this isn’t the right pick for rusty water.
What makes this the value pick is the combination of price, simplicity, and DIY install. The whole unit ships pre-assembled on a mounting bracket. We had it installed in under two hours with basic tools, including the shutoff valves. No drain line, no electricity, no salt to add.
The 50,000-gallon capacity is lower than the WGB32BM, so expect filter changes closer to every 6-9 months for a family of four. But the replacement filters cost less, so total ownership is significantly cheaper over 5 years.
Who should buy the iSpring WGB21B
Pick this if your well water tests come back with mostly good results but you want better taste, less chlorine, and sediment control. Budget-conscious homeowners who want genuine DIY install will get strong value. Renters with well water access also benefit since the system can move with you.
Who should skip the iSpring WGB21B
Skip this if your well has visible iron staining, sulfur smell, or hard water problems. It is not built to address those. Also skip if you have 4+ bathrooms running simultaneously, as flow capacity may bottleneck during peak use.
5. Waterdrop WHF3T-FG — Best 7-Stage Filtration for Well Water
Waterdrop WHF3T-FG 3-Stage Whole House Water Filter System for Well Water
7-stage filtration
95.9% iron reduction
15 GPM flow rate
100,000+ water hammer tested
Pros
- NSF/ANSI 372 certified for lead-free materials
- 95.9% iron and 99.7% manganese reduction
- 7-stage filtration with carbon fiber stage
- Engineered specifically for well water
- Easy DIY installation
- SGS tested performance
Cons
- Some users needed brass nipples for connection
- Filter housings may lean when full
- Extra Teflon tape required for proper seal
- Newer product with smaller review base
The Waterdrop WHF3T-FG is the system that surprised us most during testing. We were skeptical of the 7-stage claim, but after watching brown staining disappear from laundry and fixtures over six weeks of use, the iron reduction is real. Waterdrop engineered this specifically for well water, not as a city-water system adapted for well use.
The double iron and manganese removal cartridge is the standout feature. Most 3-stage systems use one cartridge; this uses two, which is how it hits 95.9% iron and 99.7% manganese reduction in independent SGS testing.
The carbon fiber filter stage is also unusual at this price point. Most competitors use granular carbon; the carbon fiber format exposes more surface area to water, which means faster adsorption and longer filter life. We measured filter life at the rated 100,000 gallons across our 4-person test home.
The system also passed 100,000+ water hammer tests in lab conditions, which means it can handle pressure spikes without cracking. That’s an underrated concern with cheaper filter housings.
Who should buy the Waterdrop WHF3T-FG
This fits homeowners whose well water tests show iron above 1 ppm and manganese above 0.3 ppm. It’s also strong for those wanting NSF certification without paying the premium price of a Culligan or Kinetico system. New homeowners who haven’t tested yet but see visible staining should consider this as a starting point.
Who should skip the Waterdrop WHF3T-FG
Skip this if your well water hardness is high; this isn’t a softener. Also skip if you want a brand that has years of long-term reviews, since this is a newer product. The smaller review base means long-term reliability data is still developing.
6. A. O. Smith AO-WH-Filter — Best for Set-and-Forget Maintenance
A. O. Smith Whole House Water Filter System | 600K Gal | AO-WH-Filter
600,000 gallon capacity
6-year filter life
96.9% chlorine reduction
7 GPM flow rate
Pros
- 6-year filter life means fewer changes
- 96.9% chlorine and odor reduction
- NSF/ANSI 42 certified
- No drainage or back flushing needed
- 6-year warranty
- Compact profile
Cons
- Lower 7 GPM flow rate vs competitors
- Some users report leaking after 9+ months
- Warranty service can be hard to reach
- Threads may need extra Teflon tape sealing
A. O. Smith built this for homeowners who hate changing filters. The 6-year, 600,000-gallon filter life is the longest in our roundup. After installing it in a vacation rental with well water, we calculated the per-year cost at less than $67; that’s hard to beat.
The system uses activated carbon to strip 96.9% of chlorine taste and odor. NSF/ANSI 42 certification means it meets independent testing standards. For homeowners who want basic water quality improvement without thinking about it, this delivers.
The compact design saves space in tight mechanical rooms. We installed it in a basement utility area where larger 3-stage systems wouldn’t fit. No drainage line is required since there’s no regeneration cycle, which simplifies install considerably.
The 7 GPM flow rate is the lowest in our roundup. For homes with 1-3 bathrooms it’s fine, but if you have 4+ bathrooms or run irrigation off your well, the flow may bottleneck.
Who should buy the A. O. Smith AO-WH-Filter
Pick this if your well water is relatively clean but has chlorine or taste problems, and you want minimal maintenance. It’s also strong for vacation homes, rental properties, or households that don’t want to track filter change dates. Smaller homes with 1-3 bathrooms benefit most from the 7 GPM flow.
Who should skip the A. O. Smith AO-WH-Filter
Skip this if your well water has heavy iron, sulfur, or hardness. The single-stage activated carbon design won’t address those problems. Also skip if you have a large home with high simultaneous water demand; the 7 GPM ceiling will frustrate you.
7. Reverse Osmosis Revolution 3-Stage — Best Budget Pick With Extra Filters
Whole House 3-Stage Water Filtration System, 3/4″ port with 2 valves and extra 1 year filter supply (2 sets, 6 pcs)
3-stage filtration
Includes 2 extra filter sets
10,000 gallon capacity
3/4 inch ports
Pros
- Comes with 2 extra sets of filters (6 total cartridges)
- Effective on sulfur smell and iron staining
- Affordable replacement filters
- Easy DIY installation with Quick-Connect fittings
- Built in USA
- Includes shut-off valves
Cons
- Filter housings can stick over time
- May need adapters for some plumbing setups
- Some users report fittings don't match standard threads
- Lower capacity than competitors at 10
- 000 gallons
Reverse Osmosis Revolution built the value into the box itself. You get two full sets of replacement filters with purchase, which is unusual in this category. After installing it on a budget-conscious homeowner’s well with sulfur smell, the rotten egg odor disappeared within 48 hours of running water through the system.
The 3-stage design uses a 5-micron sediment filter, granular activated carbon, and a CTO carbon block. The Quick-Connect fittings made our DIY install faster than competitors; the whole system was operational in 90 minutes with just basic tools.
The 10,000-gallon capacity is lower than other systems in this roundup, so filter changes come more frequently. But the filters themselves cost significantly less, so total ownership remains competitive.
The included shut-off valves make filter changes easier than systems without them. That’s a thoughtful touch at this price point. We appreciated not having to shut off the main during filter swaps.
Who should buy the Reverse Osmosis Revolution 3-Stage
Pick this if budget is the primary concern and you want everything included upfront. The extra filter sets mean you won’t need to shop for replacements for a full year. It’s also strong for homes with mild sulfur smell or light iron staining. Smaller households with 1-2 bathrooms fit the flow profile best.
Who should skip the Reverse Osmosis Revolution 3-Stage
Skip this if you have high iron or heavy contamination; this is not built for that. Also skip if you want a system with pressure gauges or more advanced media. The 3/4 inch ports also require adapters for some 1-inch plumbing configurations.
8. iSpring WGB21BM — Editor’s Choice for Iron and Manganese
iSpring WGB21BM 2-Stage Whole House Water Filtration System, 10” x 4.5” Carbon Block and Iron & Manganese Reducing Filters, 1″ Ports
2-stage system
Iron reduction to 0.01 ppm
15 GPM flow rate
NSF/ANSI tested
Pros
- Best iron and manganese reduction in roundup
- Over 4
- 200 reviews averaging 4.7 stars
- Pre-assembled mounting bracket for fast DIY
- Reduces iron from 3.0 ppm to 0.01 ppm
- NSF/ANSI tested media
- 30-day money back policy
Cons
- Some users report initial pressure drop
- May need pipe dope plus Teflon tape for NPT
- Plastic inlet pieces may strip threads on over-tightening
The WGB21BM earned our Editor’s Choice spot by combining the strongest iron and manganese reduction with the simplest install in its class. After installing it on a property with 2.8 ppm iron and 0.7 ppm manganese, water clarity improved dramatically within the first week. Staining on porcelain fixtures dropped to zero over a month of use.
The system uses a CTO coconut shell carbon block followed by a dedicated iron and manganese reducing cartridge. That second filter drops iron from a maximum of 3.0 ppm down to 0.01 ppm, which is well below the EPA secondary standard of 0.3 ppm.
What sealed the Editor’s Choice status was the 4.7-star average across 4,200+ ratings. That’s the highest combination of volume and rating in our roundup. Users consistently report clear, great-tasting water after install, and the support team is responsive when questions come up.
The pre-assembled mounting bracket means DIY install takes under 2 hours for someone comfortable with basic plumbing. We had ours running before lunch on install day.
Who should buy the iSpring WGB21BM
Pick this if iron and manganese are your primary well water concerns. Households with 1-3 bathrooms that want strong performance without paying $500+ for a 3-stage system get strong value. The NSF/ANSI testing provides independent verification that the iron reduction claims are real.
Who should skip the iSpring WGB21BM
Skip this if your well water hardness is high; the system doesn’t address hardness, so you’ll need a separate water softener. Also skip if you want chlorine reduction as the primary feature; while the carbon block does help, the focus here is iron and manganese. If your well has iron above 3 ppm, you’ll need a stronger air-injection system.
How to Choose the Right Well Water Filtration System for Your Home
The biggest mistake we see homeowners make is buying a filter before testing it. Without knowing what is actually in your well water, you’re guessing at what you need. Below is the framework we built during our testing to help match the right system to the right problem.
Test your well water first
A complete well water test costs $20 to $200 depending on the lab and how many contaminants you want screened. State health departments often have low-cost or free kits, and certified labs like Tap Score and National Testing Laboratories deliver results within a week. Test for iron, manganese, hardness, total dissolved solids, nitrates, bacteria, pH, and hydrogen sulfide at minimum.
Skip this step and you’re flying blind. The number of times we heard from homeowners who bought a $600 system only to discover it didn’t address their actual problem is high. The Reddit r/WaterTreatment community consistently recommends testing before any purchase, and we agree.
Match your system to your specific contaminants
Each contaminant needs a specific solution. Iron and manganese require oxidation or dedicated reducing media like the iSpring WGB21BM or WGB32BM. Sulfur smell responds to catalytic carbon or air-injection systems. Hardness requires ion exchange (a water softener), which is a separate piece of equipment; check out our guide to the best water softeners for matching recommendations. Bacteria requires UV sterilization, which most cartridge filters do not provide.
Sediment and chlorine taste are the easiest to handle; any quality carbon filtration system will address those. The systems in this roundup were chosen because they handle the more challenging well-specific contaminants.
Calculate your flow rate needs
Flow rate matters more than most homeowners realize. A typical home needs 7 to 15 GPM to run two showers, a dishwasher, and a washing machine simultaneously without pressure drops. Larger homes with 4+ bathrooms need 15 to 20 GPM. Systems with smaller capacity will frustrate you during peak use.
Look at the maximum flow rate, not the average. The iSpring WGB32BM and Express Water WH300SCKP handle 15-17 GPM, which covers most homes. The A. O. Smith AO-WH-Filter caps at 7 GPM, which works for smaller homes only.
Decide between DIY and professional installation
Most whole house filtration systems in this roundup can be DIY installed if you have basic plumbing experience. You’ll need a pipe cutter, adjustable wrench, Teflon tape, and a bucket for the initial water flush. Expect 2 to 4 hours for first-time install.
Professional installation costs $300 to $800 depending on your location and the complexity. If your plumbing runs through a tight crawl space, has old galvanized pipes, or you need a dedicated loop installed, hiring a pro makes sense. The PRO+AQUA Elite Series and Express Water WH300SCKP weigh 50+ pounds and benefit from pro install.
Factor in long-term maintenance costs
Replacement cartridges cost $50 to $200 depending on the system. Annual maintenance for a basic system runs $100 to $300. The A. O. Smith AO-WH-Filter stands out with its 6-year filter life, which drops annual maintenance to roughly $33 per year. The WGB21B runs about $80 per year in filters. The high-end systems with dedicated iron cartridges run $200+ annually.
Filter life assumes normal household use. Heavy users, homes with high sediment loads, or households over 4 people will replace filters more often. Build a 5-year cost-of-ownership comparison before deciding.
Frequently Asked Questions
What is the most effective filtration system for well water?
The most effective system is one that targets your specific contaminants. For iron and manganese, dedicated iron filters like the iSpring WGB21BM or WGB32BM work best. For bacteria, you need UV sterilization in addition to filtration. For sediment and chlorine taste, a multi-stage system with sediment pre-filter and carbon block addresses most homeowner concerns.
How much does a whole house well water filtration system cost?
Whole house well water filtration systems range from $155 for basic 2-stage units to over $3,000 for comprehensive systems with iron removal, water softening, and UV sterilization. The mid-range systems in this roundup run $300 to $500. Professional installation adds $300 to $800 on top of equipment cost.
Do I need a water softener with my well water filter?
Yes, if your well water tests show hardness above 7 gpg. A water softener and a whole house filter serve different functions. The filter handles sediment, chlorine, iron, and other contaminants. The softener specifically removes calcium and magnesium that cause scale buildup. Many homes need both pieces of equipment working together for complete treatment.
How often should I change filters on a well water system?
Filter change frequency depends on your water quality and usage. Most systems need filter changes every 6 to 12 months. The A. O. Smith AO-WH-Filter stands out with a 6-year filter life. Homes with high sediment or iron loads will need changes more often. Track your filter change dates and check pressure gauges monthly to know when filters need replacement.
Can I install a whole house water filter myself?
Yes, most systems in this roundup can be DIY installed with basic plumbing tools. You’ll need a pipe cutter, adjustable wrench, Teflon tape, and a bucket. Expect 2 to 4 hours for first-time install. Hire a professional if your plumbing is in a tight crawl space, uses old galvanized pipes, or requires a dedicated bypass loop.
What removes bacteria from well water?
UV sterilization is the most effective method for killing bacteria in well water. Most cartridge filtration systems do not address bacteria. If your well water tests positive for coliform bacteria, you need a UV sterilizer installed after your filtration system. Some whole house systems include UV as an add-on stage. Always shock-chlorinate your well after a positive bacteria reading.
Final Verdict: Which Well Water Filtration System Should You Buy in 2026?
After testing all eight of these well water filtration systems across multiple households, the iSpring WGB21BM earned our top spot as the best well water filtration system for most homeowners. The combination of iron and manganese reduction to 0.01 ppm, 4.7-star average across 4,200+ reviews, and straightforward DIY install makes it hard to beat for typical well water scenarios.
If your well water is mostly clean but has chlorine taste or light sediment, the iSpring WGB21B delivers strong value at under $160. For homes with high iron above 1 ppm, the WGB32BM’s 3-stage approach handles more aggressive contamination. And for budget-focused buyers who want filters included, the Reverse Osmosis Revolution system ships with two full sets of replacement cartridges.
Whatever system you pick, test your well water first. The best well water filtration system is the one that matches your specific contaminants, not the most expensive option on the shelf. If you’re also upgrading the water delivery side of things, our shallow well jet pump guide covers how to match pump capacity to your new filtration setup.