Popular New Guides Product Guides Tools Checklists My Pool

Results for "cloudy water"

612+ Answers Updated Weekly Free
How to Dissolve Pool Stabilizer (CYA) - Complete Guide
Water Chemistry Medium 2-4 days for complete dissolution 1,247 👍 2

How to Dissolve Pool Stabilizer (CYA) - Complete Guide

Around $800 worth of granular cyanuric acid is just sitting on my pool bottom — would my warranty cover this stabilizer dissolution mess before I drain 20,000 gallons? I have a 20,000 gallon inground pool and my current CYA reading is around 15 ppm - I need to get it up to about 50 ppm. I tried just broadcasting the granules directly into the pool like I do with other chemicals, but they seem to just sink to the bottom and sit there without dissolving much.

I've heard that cyanuric acid is notoriously slow to dissolve compared to other pool chemicals. What's the most effective method to get this stuff into solution? Should I be pre-dissolving it somehow, or is there a specific technique that works better? I want to make sure I'm doing this right and not wasting product or creating hot spots in my pool.…more
How Long After Shocking Pool to Add Algaecide? Complete Guide
Algae Green Pool Medium 2-3 days 1,096 👍 9

How Long After Shocking Pool to Add Algaecide? Complete Guide

The pool service guy insists I wait a full 24 hours after shocking before adding algaecide, but that seems excessive when algae keeps spreading. I have two young kids who are eager to get back in the water, and I want to make sure I'm doing this chemical treatment properly.

Should I wait a certain amount of time between the shock treatment and adding the algaecide? I'm also concerned about when the water will be safe for swimming again. What chlorine levels should I be looking for before adding more chemicals, and how do I know when everything is balanced enough for the kids to swim safely?…more
Can You Reuse Pool Filter Sand? Cleaning vs Replacement
Filters Medium 4-6 hours 631 👍

Can You Reuse Pool Filter Sand? Cleaning vs Replacement

Halfway through another messy backwashing session with my gunky 3-year-old sand filter, I'm trying to decide between cleaning it again or just replacing the sand entirely. The sand looks pretty gunky when I backwash, but replacement sand isn't cheap. I've heard some people say you can rinse it thoroughly and reuse it, while others insist fresh sand is the only way to go. What's the real deal here? I don't mind doing the work myself if it'll save some money, but I also don't want to compromise my water quality.…more
How Long to Run Pool Filter Daily - Complete Guide
Filters Medium 30 minutes 371 👍

How Long to Run Pool 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 366 👍

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
How Long Can a Pool Stay Closed? Duration & Safety Limits
Maintenance Medium varies by closure type 362 👍

How Long Can a Pool Stay Closed? Duration & Safety Limits

Between the winter thaw and spring opening every year, I'm left wondering if my pool's been closed too long and the water is now unsafe. My facility requires extended closure periods for various operational reasons, and I want to establish clear protocols for both planned seasonal shutdowns and emergency closures.

Specifically, I'm looking for data on maximum safe closure timeframes before water chemistry becomes unmanageable and equipment integrity is compromised. What are the industry standards for winterized pools versus temporary emergency closures?…more
Can I Turn Pool Pump Off at Night? Complete Owner's Guide
Pump Problems Easy 30 minutes 321 👍

Can I Turn Pool Pump Off at Night? Complete Owner's Guide

This electric bill is destroying my budget and I can't afford to keep this pool pump running 24/7 — is it safe to shut it off nights?
The pool store told me the pump should run constantly, but my neighbor says he turns his off at night to save on electricity costs.

I'm worried about messing something up since this is all new to me. Is it actually safe to turn the pump off overnight, or will that cause problems with the water? If I can turn it off, how many hours should it still be running each day to keep everything clean and healthy?…more
Can I Shock Pool After Adding Alkalinity? Timing Guide
Water Chemistry Medium 6-8 hours 319 👍

Can I Shock Pool After Adding Alkalinity? Timing Guide

Walked out to check my 20,000 gallon inground pool after dosing it with sodium bicarbonate this morning to raise alkalinity from 60 ppm to 100 ppm, and now I'm second-guessing my shocking timeline. My pH was sitting at about 7.2 before I added the alkalinity increaser, but I know adding baking soda can bump up the pH as well.

I'm planning to shock the pool tonight since we've had some heavy swimmer load this week and the water is starting to look a bit cloudy. Should I wait a certain amount of time after adding the alkalinity before I shock? I want to make sure the shock is as effective as possible and I've heard that pH levels can affect how well chlorine works.

My current test results show chlorine at 1.5 ppm, alkalinity should now be around 100 ppm, and I'm not sure what the pH has risen to after adding the sodium bicarbonate earlier today.…more
Do Fiberglass Pools Need Calcium Hardness? Complete Guide
Water Chemistry Medium 45 minutes 314 👍

Do Fiberglass Pools Need Calcium Hardness? Complete Guide

Pool builder says my new fiberglass shell doesn't need calcium hardness adjustments like a plaster pool does. But the water test shows 150 ppm and the internet says that's too low for any pool. Who's right here — does fiberglass actually need calcium or not?…more
Can You Shock Pool Without Running Filter? Safe Method
Filters Medium 4-6 hours 313 👍

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
Do Vinyl Pools Need Calcium? Complete CH Guide 2024
Water Chemistry Medium 2-4 hours 303 👍

Do Vinyl Pools Need Calcium? Complete CH Guide 2024

Before our big pool party this Saturday, I'm getting completely contradictory advice about whether my vinyl pool even needs calcium added! I keep reading conflicting info online - some sources say vinyl pools don't need calcium at all, others say they do but at different levels than concrete pools. My test strips show I'm sitting around 100 ppm right now and I'm not sure if that's too low or if I even need to worry about it.

I've been dealing with some metal staining on my vinyl liner and wondering if low calcium could be making it worse by causing corrosion. But I'm also terrified of adding too much and ending up with scaling or that dreaded cloudy water that takes forever to clear up. What's the sweet spot for calcium hardness in vinyl pools, and is it really different from other pool types?…more
Can I Shock Pool After Adding Baking Soda? Complete Guide
Water Chemistry Medium 4-6 hours 274 👍

Can I Shock Pool After Adding Baking Soda? Complete Guide

Noticed my neighbor's pool stays crystal clear when he adds baking soda then shocks immediately, but mine turns cloudy every time — what's his secret? I added baking soda to raise my alkalinity this morning, but now I'm wondering about timing.

Can I go ahead and shock the pool right away, or do I need to wait? I don't want to waste the shock treatment or mess up my water chemistry. The pool store guy mentioned something about waiting but then tried to upsell me on their "premium" shock system. Just looking for straight answers on proper timing and whether I should test anything specific before shocking.…more
Can You Run Pool Pump Without Skimmer? Safe Solutions
Pump Problems Medium 30 minutes 274 👍

Can You Run Pool Pump Without Skimmer? Safe Solutions

Every pool owner seems to swear by replacement skimmer baskets, but I'm wondering if I'm about to waste money on this cracked assembly replacement? I have a 20,000 gallon inground pool with both a main drain and skimmer line feeding into the pump. The skimmer is currently letting air into the system and causing the pump to lose prime intermittently.

I'm wondering if I can temporarily close off the skimmer line completely and just run the pump using suction from the main drain until I can fix the skimmer properly. Will this provide adequate circulation for my pool size, and are there any risks I should be aware of? I'm concerned about whether the main drain alone can handle all the filtration needs and if this might cause any damage to my pump or affect water quality during this temporary period.…more
How Long Do Pool DE Filters Last? Complete Lifespan Guide
Filters Medium 45 minutes 272 👍

How Long Do Pool DE Filters Last? Complete Lifespan Guide

Pulled the cover off my DE filter system today and got hit with this awful musty, stagnant smell after 18 months of running it on my 20,000-gallon pool. I've been adding fresh DE powder every few weeks after backwashing, but I'm not sure how long the actual filter grids are supposed to last before they need to be completely replaced.

Lately I've noticed that my filter cycles seem to be getting shorter - I'm having to backwash more frequently than I used to, and the water clarity isn't quite as crystal clear as it was when the system was newer. My pool gets moderate use with about 4-6 swimmers regularly, and I keep my chlorine around 2-3 ppm and pH at 7.4. Are these signs that my grids are wearing out, or is this normal aging? What's the typical lifespan I should expect from DE filter components?…more
Can I Swim After Adding Pool Stabilizer? Safe Wait Times
Water Chemistry Easy 30 minutes 268 👍

Can I Swim After Adding Pool Stabilizer? Safe Wait Times

Turned my pool stabilizer into a mystery this morning - added it to my 20,000 gallon inground pool but my cyanuric acid test reads zero when everything says it should show immediately. I used the granular form and dissolved it in a bucket first before pouring it around the perimeter while the pump was running. My kids are asking when they can get back in the water, but I want to make sure it's completely safe.

I've heard different things about wait times - some people say you need to wait hours, others say it depends on the type of stabilizer you use. The granules seemed to dissolve pretty well, and I've had the circulation system running for about an hour now. What's the actual safe waiting period before we can swim again? Does it matter whether you use granular versus liquid stabilizer?…more
PoolGuy810
Ask a Pool Expert Avg reply < 5 min

My Pool Settings

Hi, I'm Splash!
Need help setting up? I can walk you through it
Pool Info
Calculate volume
Climate & Cover
Typical Chemistry

Pre-fill calculators with your usual levels (optional)

30-50 chlorine, 70-80 SWG
60-80 recommended
250-350 recommended
Equipment

Select your equipment to personalize checklists

Sync across devices

Pool Saved to Cloud

Your sync code (use this to load your profile on another device):

Write this down! There is no way to recover it if you lose it and clear your browser.