Results for "filter cartridge"

Filters Easy 30-45 minutes 578 👍 1

Do I Need to Backwash a Cartridge Filter? Complete Guide

Around $150 is what my pool store quoted to service my cartridge filter and I'm wondering if I can just backwash it myself like other filters. Is this possible or do I need to clean it differently?…more

Read answer

Filters Easy 2–3 hours (including soak time) 12 👍 1

How to Deep Clean a Pool Cartridge Filter

Nobody tells you how fast sunscreen and body oils can clog up a cartridge filter. My pressure gauge has been creeping up steadily, and when I finally pulled the cartridges out, the pleats looked genuinely gunky — not just dusty, but greasy and discolored even after I sprayed them down with the garden hose. A neighbor suggested soaking them in Simple Green since it's a degreaser, but I'm nervous about it foaming up my pool water if I don't rinse it out completely.

My current routine is basically just a garden hose spray-down every few weeks, but clearly that's not cutting through the oils and sunscreen buildup. I want to know the full proper process — the right way to hose them down, whether Simple Green or a dedicated pool filter cleaner is the smarter choice, how to handle mineral scale versus greasy residue differently, and how often a real deep clean should actually happen.

Also, someone in my neighborhood group mentioned using a pressure washer to blast the pleats clean, and now I'm second-guessing everything. What should I absolutely avoid doing, and what's the correct method from start to finish?…more

Read answer

Filters Medium 1–2 hours research and planning; installation time varies 34 👍 1

Cartridge vs Sand Filter: Is Switching Worth It?

Three summers of hauling cartridges out of my filter housing, blasting them with a hose, and letting them dry in the backyard — and I'm at my breaking point. The funny thing is it only really feels unbearable when it's above 85°F outside, because that's when the algae pressure picks up and I'm pulling the cartridges every couple of weeks instead of once a month. During the cooler shoulder season the system works fine and I barely think about it.

My neighbor runs a sand filter and swears he just backwashes it every few weeks and forgets about it. Replacement cartridges for my setup run me somewhere around $100–$150 a pop, and they don't last as long as I'd like. I'm seriously considering making the jump to sand — but I want to know what that conversion actually costs, whether I'll regret the water clarity trade-off, and whether the long-term math actually works out in my favor.

Is converting from cartridge to sand a genuinely smart move for a medium-sized in-ground pool, or am I just reacting to a hot-weather frustration? What are the real trade-offs I should be thinking through before I commit?…more

Read answer

Editor's Pick

Dolphin Nautilus CC Plus Robotic Pool Vacuum (2026)

Wall-climbing scrubber brush and Wi-Fi control — ideal for in-ground pools up to 40 ft. View on Amazon →

Sponsored

Filters Easy 15 minutes 323 👍 1

How to Tell If Your Pool Cartridge Filter Is Bad - 7 Signs

Nobody can explain why my test strips show perfect chemistry levels but my pool water looks like chocolate milk. Filter cartridge looks grayish and the pleats seem a bit beat up. Tried cleaning it but water quality isn't improving.

How do I know when it's actually time to replace the cartridge versus just needing a better cleaning? What should I be looking for?…more

Read answer

Filters Easy 15 minutes 470 👍 1

How Long Do Pool Cartridge Filters Last? Replacement Guide

Between my pool store saying 2-4 weeks and everything online claiming 2-4 months, I'm completely lost on when to actually replace my cartridge filter. How long between cleanings? When do I throw them out completely and buy new ones?

Running my pool daily during summer. Want to stay on top of maintenance but not waste money replacing too early.…more

Read answer

Filters Easy 15 minutes 247 👍 0

Do Cartridge Pool Filters Need DE? Complete Guide

During pool season, is it dangerous that I'm getting conflicting advice about using DE powder with my cartridge filters when I've got kids swimming daily? My pool store said it might help with clarity, but I'm reading mixed reviews online. I've been cleaning my cartridges regularly and they seem fine, but my water isn't crystal clear like I want it. Some people swear by adding DE to cartridge systems while others say it's pointless or even harmful. What's the real story here? Will DE actually help my filtration or am I just wasting money and potentially creating problems?…more

Read answer

Filters Medium 45 minutes 561 👍 0

How Pool Cartridge Filters Work: Complete Troubleshooting

Spent another spring weekend dealing with my cartridge filter acting up again, and I'm done getting ripped off at the pool store instead of fixing it myself. The guys there always want to sell me expensive new cartridges or additives, but I feel like if I understood what's actually happening inside the filter, I could maintain it better.

What's the step-by-step process of how water gets cleaned as it passes through? I know there's some kind of fabric material involved, but I want to understand the nitty-gritty details of how particles get trapped and what size debris these things can actually handle.…more

Read answer

Filters Medium 45 minutes 206 👍 1

Do I Need DE in My Pool Filter? Diagnosis & Solutions

I turned to three different pool techs about my 2019 Pentair FNS Plus cartridge system and got three completely different answers about adding DE. My kids spend hours in the pool every day during summer, and I want to make sure the water is as clean and safe as possible for them.

I'm honestly not even 100% sure what type of filter system we have - the previous homeowner left some DE powder in the pool shed, but I don't know if I'm supposed to be using it or not. How do I figure out if my specific filter needs DE, and if so, what's the right way to add it? I just want crystal clear water that's safe for my children to swim in every day.…more

Read answer

Filters Easy 15 minutes reading 329 👍 0

How Pool Filters Work: Sand, Cartridge & DE Filter Guide

Pool store tried explaining the difference between sand, cartridge, and DE filters for 20 minutes and I walked out more confused than when I went in. My sand filter is dying and I need to pick a replacement but every type seems to have major trade-offs. How do these three actually compare?…more

Read answer

Pump Problems Easy 15 minutes 450 👍 1

Can You Run Pool Pump Without Filter? Risks & Solutions

Somewhere between my husband questioning why our pool pump is running without a filter cartridge and my growing panic, I'm wondering if I'm actually damaging something. My filter cartridge is completely clogged and I need to replace it, but my kids are asking to swim this afternoon. I'm wondering if I can just run the pump without any filter for a few hours until I can get to the pool store.

I know this probably isn't ideal, but would it cause any serious damage to the pump or create unsafe water conditions? I don't want to risk my children's safety, but I also don't want to damage our equipment if there's a way to manage this temporarily.…more

Read answer

Filters Medium 2-4 hours 285 👍 0

Can You Run Pool Filter Without Sand? Safe Alternatives

Before I discovered my sand filter was the culprit, my pool was eating through chlorine way faster than it should even with perfect 2.5 ppm levels and 7.4 pH. When I opened up the filter tank to check, I discovered that most of the sand has somehow disappeared - there's maybe 20% left at the bottom.

I'm waiting for a sand delivery that won't arrive for another week, but my pool is getting cloudier by the day. The filter is currently running with just the remaining sand, but I'm worried about potential equipment damage. Are there any safe alternatives I can use temporarily, or should I just shut down the system until I get proper sand? I've heard about filter glass and zeolite but don't know if they're compatible with my setup.…more

Read answer

Product Ranking 8 compared

Best Variable Speed Pool Pumps

4.5 (12,400 reviews)

Filters Easy 30 minutes 390 👍 0

How to Clean Pool Cartridge Filters - Complete Guide

Since following that popular YouTube tutorial on cleaning my cartridge filters, they're somehow more clogged than before and my flow rate dropped even worse. My current filters are showing signs of debris accumulation and reduced flow rates, indicating it's time for cleaning.

What's the correct methodology for cleaning these filters, and what frequency should I maintain for optimal filtration performance? I want to ensure I'm following proper procedures to maximize filter lifespan while maintaining water quality standards.…more

Read answer

Equipment Medium 45 minutes 450 👍 17

Can You Vacuum Pool on Recirculate? Complete Guide

Pulled a ton of storm debris out of our pool and now I'm trying to decide between normal filtration and recirculate mode for vacuuming.
The pool is so messy that I'm concerned about clogging up our filter system if I vacuum normally, but I also don't want to compromise water quality.

Can I vacuum the pool using the recirculate setting instead? I want to make sure I understand what this does - will it actually clean the water properly or just move things around? My main concern is whether the water will be safe and clean enough for the kids to swim in afterward, or if I need to take additional steps to ensure proper filtration.…more

Read answer

Filters Medium 45 minutes 213 👍 0

Do I Need a Sand Filter for My Pool? Complete Guide

Since my pool water keeps turning cloudy even after cleaning, is it dangerous for my kids who swim almost daily? My pool has been a constant headache and I'm wondering if switching to a sand filter would solve my problems, or if there are better options out there.

I keep hearing different things - some people swear by sand filters because they're supposedly low-maintenance, others say cartridge or DE filters work better. My pool isn't huge but gets decent use, and honestly I just want something that actually works without me having to mess with it constantly. What's the real deal with these different filter types and how do I know which one would work best for my situation?…more

Read answer

Maintenance Easy 45 minutes 198 👍 1

Can You Vacuum Pool on Backwash? Proper Filter Settings

Already tried everything but my pool filter clogs every time I vacuum, the water won't clear up, AND I can't figure out the right filter setting.
Should I have it on backwash while I vacuum, or use a different setting? Don't want to mess anything up.…more

Read answer

Loading more Q&A...

You've seen all 93 Q&A articles!