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Do I Need DE in My Pool Filter? Diagnosis & Solutions
Filters Medium 45 minutes 205 👍 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
Can You Vacuum Pool on Backwash? Proper Filter Settings
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
Can You Run Pool Filter Without Sand? Safe Alternatives
Filters Medium 2-4 hours 285 👍

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
Can You Vacuum Pool on Recirculate? Complete Guide
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
Can I Use Pool Filter Sand? Complete Installation Guide
Filters Medium 2-3 hours 212 👍 1

Can I Use Pool Filter Sand? Complete Installation Guide

Replacing the sand in my pool filter for the first time and the bags at the hardware store look identical to the pool store sand but cost half as much. Is pool filter sand actually different from regular sand or is this just markup? Don't want to ruin my filter trying to save $30.…more
How to Know If Your Pool Filter Is Dirty: Clear Warning Signs
Filters Easy 15 minutes 263 👍 1

How to Know If Your Pool Filter Is Dirty: Clear Warning Signs

Around the pool supply store staring at rows of filters with absolutely no idea how to tell if mine actually needs replacing. What should I be looking for to know when my filter is getting too dirty and needs attention?

I've heard something about pressure readings, but honestly I'm not sure what numbers I should be watching for or what other warning signs might tell me it's time to clean or replace the filter media.…more
Can I Vacuum Pool on Waste? Complete Filter Setting Guide
Filters Easy 45-90 minutes 357 👍 2

Can I Vacuum Pool on Waste? Complete Filter Setting Guide

Halfway through prepping for our pool party this Saturday, I realized I have no clue which filter setting to use when vacuuming all this debris. I've got some pretty heavy debris that's settled on the bottom of my pool after a storm, and I'm worried about clogging up my filter if I vacuum it all up normally.

The guy at the pool store mentioned something about using the "waste" setting when vacuuming, but I didn't really understand what he meant. Does this actually work, and when should I be using waste instead of the regular filter setting? I don't want to mess anything up since I'm still learning all this stuff.…more
Can You Shock Pool Without Running Filter? Safe Method
Filters Medium 4-6 hours 462 👍

Can You Shock Pool Without Running Filter? Safe Method

Spent years shocking my old above-ground pool without running the filter and it worked perfectly, but now I'm questioning if it's actually safe for this new setup. I need to shock my pool but I'm wondering if I absolutely have to have the filter system running while I do it? The pool store mentioned something about circulation being important, but they weren't super clear about whether that meant the filter specifically or just water movement in general.

I'm trying to figure out if there's a safe way to shock the pool even if my filter isn't running - maybe by brushing or using the return jets? Any guidance would be really appreciated since I don't want to mess this up!…more
Can Pool Filter Sand Be Used in Aquarium? Safety Guide
Filters Medium 2-3 hours for proper sand preparation 370 👍

Can Pool Filter Sand Be Used in Aquarium? Safety Guide

Three minutes into shopping for aquarium sand at $15 per tiny bag, I remembered the 50-pound bag of pool filter sand sitting in my garage. They want $25 for a tiny bag of "aquarium sand" when I can get a 50-pound bag of pool filter sand at the hardware store for half that price. It looks like the same stuff to me - just sand, right?

Before I make the switch and potentially harm my fish, I want to make sure this is actually safe. Has anyone successfully used pool filter sand in their aquarium, or are there real differences I should be worried about? I'm all for DIY solutions to save money, but not at the expense of my fish's health.…more
Can I Vacuum Pool to Filter? Complete Step-by-Step Guide
Filters Easy 45-60 minutes 346 👍

Can I Vacuum Pool to Filter? Complete Step-by-Step Guide

Three different pool cleaning methods later — skimming, brushing, and running my pump for hours — and my water is still cloudy, so I'm wondering if vacuuming to filter works. Is it okay to vacuum debris directly through my pool's filtration system? Want to make sure I'm cleaning it the right way without damaging anything.…more
Can You Filter Pool Water to Drink? Safe Methods & Risks
Water Chemistry Medium 30 minutes 435 👍 1

Can You Filter Pool Water to Drink? Safe Methods & Risks

Replaced my emergency water storage with a pool filtration system idea since shortages are coming — but am I about to waste money on something unsafe? My pool is about 20,000 gallons and I maintain it with standard chlorine tablets, algaecide, and pH balancers. The chlorine levels are usually around 2-3 ppm, and I add shock treatment weekly.

I've seen some advanced water filtration systems advertised that claim to remove chemicals and contaminants. Would something like reverse osmosis or activated carbon filtration be able to remove all the pool chemicals like chlorine, cyanuric acid, and other sanitizers to make it safe for drinking? I'm concerned about the health risks but need to understand if there are any reliable methods that could work in an emergency situation.…more
Why is my pool cloudy after shocking?
Cloudy Water Medium 140 👍 2

Why is my pool cloudy after shocking?

I shocked my pool last night to clear up the green algae, but I woke up this morning to a milky, cloudy mess instead of crystal clear water. I didn't think the shock would make it look worse, but now I'm worried I messed up the chemistry. What caused this cloudiness, and what steps do I need to take to get the water looking right again today?…more
How Long to Run Your Pool Pump and Filter Daily - Complete Guide
Filters Medium 30 minutes 978 👍

How Long to Run Your Pool Pump and Filter Daily - Complete Guide

Every pool season I feel like an idiot asking this, but I genuinely have no idea how many hours my filter should actually be running daily. My kids swim almost every day during summer, and I want to make sure the water stays clean and safe for them. I've heard different opinions - some neighbors say they run theirs 24/7, while others only run it a few hours.

I'm worried about under-filtering and having bacteria or algae grow, but I also don't want to waste electricity if it's not necessary. Our pool gets heavy use with the kids and their friends, plus we've had some really hot weather lately. What's the right balance for daily filter runtime to keep the water properly clean?…more
Can I Vacuum Pool After Adding Salt? Complete Timing Guide
Salt Water Medium 24-48 hours waiting period, 1 hour actual work 646 👍 24

Can I Vacuum Pool After Adding Salt? Complete Timing Guide

My pool's been sitting there taunting me ever since I added all that salt yesterday, and I'm completely unsure if vacuuming is even safe yet. I've got some debris that needs to come out, but I don't want to mess anything up with my equipment or screw up how the salt distributes.

Should I wait a certain amount of time before running the vacuum? And if so, how long are we talking here? Don't want to damage my pump or anything by being too eager to clean!…more
Can You Use Pool Filter Sand in Your Garden? Complete Guide
Filters Medium 2-3 hours over multiple days 479 👍 18

Can You Use Pool Filter Sand in Your Garden? Complete Guide

During this morning's pool filter sand swap, I spotted this massive pile of perfectly good sand that I'm about to dump in the trash. The pool store told me it's just silica sand, but I'm worried about chemicals and chlorine that might still be in it from filtering pool water.

I've heard that sand can help with drainage in heavy clay soil, which I definitely have in my backyard. But I want to make sure I won't harm my plants or vegetables if I use the old filter sand. Do I need to clean it first or test it somehow? Any advice from experienced pool owners would be really helpful!…more

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