Pool
Filter
Cleaning.
Here is the thing nobody tells you: hosing off your cartridge is not cleaning it.
A hose knocks off leaves and loose dirt. It does not touch the calcium scale plated onto your pleats, and it does not touch the sunscreen and body oils soaked into the fabric. Those are the two things actually restricting your filter, and neither one comes off with water pressure.
That is why a cartridge you rinsed last month can look clean and still be running at half its rated flow.
Stay Fresh Pools does real filter cleaning across Queen Creek, Gilbert, Chandler, and San Tan Valley. DE, cartridge, and sand.
No task
is too big for us
How to Actually Clean a Cartridge
We will just tell you. If you want to do it yourself, this is the process, and it is the same one we use.
1. Rinse the debris off. Low pressure, top to bottom, fan the pleats open with your fingers. This step is the one everybody does and it is maybe 20 percent of the job.
2. Degrease first. This order matters. Soak in a cartridge degreaser or a TSP solution for at least a few hours, overnight is better. This pulls out the sunscreen, lotions, and body oils that are gluing dirt into the fabric.
3. Then acid soak. Only after degreasing. A dilute muriatic solution strips the calcium.
Do not reverse those two steps. Acid on an oily cartridge bakes the oils in permanently. You will have a cartridge that looks clean, tests clean, and never flows right again. This is the single most common way people ruin a cartridge while thinking they are maintaining it.
4. Rinse thoroughly and let it dry completely. Fully dry. A cartridge that goes back in wet never fully recovers its flow, and this is why you want a second set.
5. Never use a pressure washer. It drives debris deep into the fabric and shreds the pleats. It looks satisfying and it is destroying your cartridge.
The spare set is the real trick. Every pool pro keeps two sets and rotates them. Clean set goes in, dirty set goes in the bucket, pool never goes down, and the dirty set gets a proper multi-day soak instead of a rushed rinse. If you only own one cartridge, you are structurally unable to clean it correctly, because the pool needs it back before the soak is done.
That is most of why people hire this out. Not because it is hard. Because it is two overnight soaks, a drying day, and a spare set you probably do not own.
DE Filters: Backwashing Is Not Cleaning
Backwashing flushes out DE and some debris. That is it. The grids underneath are still carrying oil and scale.
DE filters need a full breakdown at least twice a year here. Tank comes apart, grids come out, each one gets inspected, soaked, and rinsed, manifold gets checked, o-rings get looked at, then it goes back together and gets recharged with the right amount of DE.
If nobody has broken your DE filter down in two years, it is not filtering the way you think it is, and there is a decent chance we find a torn grid when we open it. That is a repair conversation, and we will tell you before we do anything.
Sand Filters
Backwash as needed. That is genuinely most of it.
But sand does not last forever. It channels, it clumps, and it rounds off, and after five to seven years it is not filtering. There is no soak that fixes old sand. It gets replaced.
How Often, in This Climate
Forget what the manual says. The manual was written for a pool that shuts down for five months a year.
- Cartridge: every three to four months
- DE: full breakdown twice a year, minimum
- Sand: backwash as needed, new sand every five to seven years
But the calendar is the backup answer. The gauge is the real one. Clean it when your pressure reads 8 to 10 PSI above your clean baseline.
If you do not know your baseline, that is not your fault, almost nobody has been given it. It is the pressure your filter reads right after a proper cleaning, and it is the only number that tells you when the next one is due. We write it on the filter and hand it to you. It is the difference between maintaining a filter and reacting to one.
Why Your Filter Works Harder Here
Our water is hard. Every top-off adds calcium, and in a July here you are topping off constantly because of evaporation. That calcium plates onto pleats and grids and it does not rinse off. This is the number one thing we find on filters nobody warned the homeowner about, and it is why a cartridge in Queen Creek needs an acid soak that a cartridge in Portland never will.
There is no off-season. Your pump runs twelve months a year, so your filter accumulates roughly double the hours of the same unit in a freeze market. Everything on the maintenance schedule moves up accordingly.
Monsoon buries it. Dust storms in July and August dump a debris load that will pressure-lock a filter in two storms. If your filter was fine in June and the pressure spiked in August, that is what happened.
Heat and bather load. Ninety-degree water, heavy summer use, and a lot of sunscreen. All of it ends up in your pleats.
And it costs you money in a way you cannot see. A restricted filter makes your pump work harder for less flow, which means more electricity for worse filtration. Your pump is likely the second biggest draw in the house after the AC. A choked filter is not a cosmetic problem.
What We Do
1. Pressure reading first, against your clean baseline. If you do not have one, we set one.
2. Full teardown. Cartridges out, or grids out and inspected individually. We look at every one. This is where torn grids, cracked manifolds, collapsed pleats, and bad o-rings get found, and it is the reason a clean is also a diagnostic.
3. Degrease, then acid, in that order, with proper dwell time. Not a rinse in your driveway.
4. Reassembly, recharge, and a new baseline written down and handed to you.
5. We tell you when it is done. A cartridge that is deformed, permanently gray, or will not hold its pleats open is finished, and no soak is bringing it back. We will say so rather than take your money to clean something that needs replacing.
6. No contract. One clean, or put it on a schedule with weekly service so you never think about it again.
Who Calls Us
Homeowners across Queen Creek, Gilbert, Chandler, and San Tan Valley, including Cortina, Encanterra, Seville, Power Ranch, Val Vista Lakes, Agritopia, and Ocotillo.
- Your pressure is climbing and you would rather not spend a Saturday on it.
- You have been hosing it off and the pressure is not coming down.
- You just bought the house and nobody knows when the filter was last opened.
- You have a DE filter that has never been broken down.
- You are coming out of a green pool cleanup and your filter just ate an algae bloom.
- You own one cartridge and no spare, so you have never actually cleaned it properly.
We stand
Behind our work
Get A Quote
Send us a message, or call us for an estimate. Use our contact form to tell us more about your project, and we will get back with you ASAP!