Popular New Calculator Checklist Community Guides Product Guides Live Cams My Pool

Results for "chemical-timing"

464+ Answers 2 New This Week Free
Pool VideosSee all →
Can Pool Chlorine Burn Your Skin? Chemical Safety Guide
Water Chemistry Medium 15 minutes 337 👍

Can Pool Chlorine Burn Your Skin? Chemical Safety Guide

Replaced my pool chlorine system after seeing my neighbor's kids swim all day with perfect skin, but mine still come out looking like lobsters. What are the specific conditions that lead to skin burns from pool chlorine, and what are the precise chemical parameters I should maintain to prevent skin irritation?

I'm particularly concerned about concentrated chemical exposure during maintenance procedures and want to know the exact chlorine levels that are safe for swimmers versus those that can cause chemical burns.…more
Hot Tub & Spa Water Care Guide: Complete Chemistry Manual 2026
Water Chemistry Medium 15-20 minutes 277 👍 1

Hot Tub & Spa Water Care Guide: Complete Chemistry Manual 2026

Hot tub water care requires maintaining proper pH (7.4-7.6), alkalinity (80-120 ppm), and sanitizer levels while following regular testing and chemical adjustment schedules. Higher temperatures and smaller water volumes make spas more sensitive to chemical imbalances than pools.…more
Do Inflatable Pools Need Chemicals? Complete Summer Guide
Water Chemistry Easy 15 minutes daily 172 👍

Do Inflatable Pools Need Chemicals? Complete Summer Guide

Nobody seems to agree on whether inflatable pools need chemical treatment! My neighbor insists that small pools don't need any chemicals since you can just dump and refill them weekly. The pool store salesperson tried selling me a whole starter kit with chlorine, pH strips, and shock treatment. Meanwhile, YouTube videos are split - some say just use a little bleach, others say chemicals are overkill for temporary pools. I've got a 12-foot inflatable that we'll be using all summer with the kids. The water's starting to look a bit cloudy after just a few days, so I'm wondering if I should bite the bullet and start treating it properly or stick with the drain-and-refill approach.…more
Can I Leave My Pool Filter On All The Time? Complete Guide
Filters Easy 15 minutes 319 👍

Can I Leave My Pool Filter On All The Time? Complete Guide

About to run my pool filter 24/7 this summer. Currently I'm running my filter system about 6 hours per day, but I've been dealing with some water clarity issues despite maintaining proper chlorine levels (2.5 ppm) and balanced pH (7.4). My pool gets heavy use from my family and I've noticed the water looks a bit cloudy by evening even after shocking. I'm wondering if I should just leave the filter running continuously to help with circulation and keep the water crystal clear, or if there's a sweet spot for daily runtime that balances effectiveness with energy costs. The pool is in full sun most of the day and we're in a fairly warm climate, so I want to make sure I'm getting adequate turnover without unnecessarily driving up my electric bill.…more
Do Intex Pools Need Chemicals? Complete Chemical Guide
Above Ground Easy 30 minutes 830 👍 1

Do Intex Pools Need Chemicals? Complete Chemical Guide

Last summer when I finally set up my first Intex Easy Set (12 feet, about 2,400 gallons), I've been completely lost on what chemicals I actually need. The manual mentions using chemicals but doesn't give much detail about what's actually required.

I've been running the filter pump for a few days now, but I'm starting to see some cloudy water and what might be the beginning of algae growth on the walls. Do Intex pools really need the same chemical treatment as regular in-ground pools? What's the minimum I need to keep the water safe for my kids to swim in? I want to make sure I'm doing this right from the start.…more
Can You Use a Pool Without a Filter? Risks & Alternatives
Filters Medium 24-48 hours monitoring 306 👍

Can You Use a Pool Without a Filter? Risks & Alternatives

Power went out for three days after the storm and my pool filter has been completely off. Water still looks okay surprisingly but my neighbor says it'll turn green any minute without filtration. Can you actually maintain a pool without running the filter, even temporarily?…more
Do I Need to Winterize My Pool? Complete Regional Guide 2026
Winterizing Medium 4-8 hours 309 👍

Do I Need to Winterize My Pool? Complete Regional Guide 2026

My 20,000 gallon inground pool looked fine yesterday, but walked out this morning and spotted ice crystals forming around the edges that definitely weren't there last night. I live in central Pennsylvania where we definitely get freezing temperatures, but I'm trying to figure out the right strategy.

I've been maintaining my pool chemistry pretty well - chlorine stays around 2-3 ppm, pH is balanced at 7.4, and alkalinity is good at 100 ppm. The pool has been crystal clear all season. But now that October is here and nighttime temps are starting to drop into the 40s, I'm wondering what level of winterization is actually necessary for my climate zone.

Do I need to drain the pool, blow out all the lines, and do the full winterization process? Or are there different approaches depending on how cold it gets in my area? I want to make sure I protect my equipment and plumbing from freeze damage, but I also don't want to do more work than necessary if my climate doesn't require it.…more
Can Pool Chemicals Make You Sick? Health Risks & Prevention
Water Chemistry Medium 45 minutes 405 👍

Can Pool Chemicals Make You Sick? Health Risks & Prevention

During every swim session, there's an overwhelming chemical burn in my nostrils and my kids emerge with angry red skin while my youngest develops this persistent cough. I've been adding chlorine and other chemicals trying to keep the water clean, but now I'm wondering if I'm creating a different problem altogether.

What kinds of health issues can pool chemicals actually cause? I handle the chemicals myself when balancing the water, and sometimes I notice my eyes watering or feeling irritated afterward. Are there specific symptoms I should watch out for that mean the chemical levels are off? I want to keep the pool safe and clean, but not at the expense of making everyone sick.…more
Can You Store Pool Chemicals in an Outdoor Shed? Safety Guide
Water Chemistry Medium 2-4 hours setup 494 👍 1

Can You Store Pool Chemicals in an Outdoor Shed? Safety Guide

Around summer my backyard shed gets scorching hot, has terrible ventilation, AND I'm panicking about whether my pool chemicals are safe out there. Is this safe or asking for trouble?

Mainly have chlorine tablets, shock, pH adjusters, and algaecide. Shed gets pretty hot in summer and doesn't have great ventilation. What are the main things I need to worry about for safe storage?…more
Pool Chemical Expiration: How Long Do They Last? Complete Guide
Water Chemistry Easy 15 minutes 394 👍 1

Pool Chemical Expiration: How Long Do They Last? Complete Guide

Finally moved into my new house and discovered the previous owner left a storage room packed with mystery pool chemical bottles that could be years old. My 20,000-gallon inground pool requires quite a bit of chemicals throughout the season, so I tend to buy in bulk when there are sales.

I've got liquid chlorine from last summer, some granular shock that's been sitting for about two years, pH increaser and decreaser from various seasons, and alkalinity increaser that I honestly can't remember when I bought. The containers don't all have clear expiration dates, and I want to know which ones I can safely use this season versus which ones I should replace.

What's the typical shelf life for different types of pool chemicals? I don't want to waste money replacing chemicals that are still good, but I also don't want to add ineffective chemicals to my pool and mess up my water balance.…more
Do You Need Pool Chemicals With a Sand Filter? Complete Guide
Water Chemistry Easy 30 minutes 311 👍

Do You Need Pool Chemicals With a Sand Filter? Complete Guide

Standing in the pool store for the third time this season while they push their entire chemical lineup on me just because I have a sand filter.

They act like I need their entire inventory just to keep my pool running. I've got a decent sand filter system that seems to be doing its job - the water looks clear and I'm not seeing any debris floating around.

But I'm wondering if I can cut back on some of these expensive chemicals or maybe even eliminate some altogether? The sand filter is catching all the physical stuff, so what exactly do I still need to be buying? I'd love to find some DIY solutions or at least understand what's actually necessary versus what they're just trying to upsell me on.…more
Can Pool Chemicals Cause a Rash? Complete Guide & Solutions
Water Chemistry Medium 2-3 hours for water correction 451 👍

Can Pool Chemicals Cause a Rash? Complete Guide & Solutions

Last week my kids broke out in red, itchy rashes after swimming, and I'm worried the pool chemicals might be dangerous - should I keep them out? Red, itchy patches on my arms and chest after getting out. Is this from the chlorine or other chemicals? Water looks clear but maybe something's off with the balance. What should I test for and how do I fix this?…more
Can Pool Chemicals Freeze? Winter Storage Guide 2026
Winterizing Medium 2-3 hours for complete winterization 241 👍 1

Can Pool Chemicals Freeze? Winter Storage Guide 2026

Opened my pool chemical bottles after reading the "store in cool, dry place" instructions, but now my garage is freezing and I'm questioning if they actually mean below 32 degrees. We had an unexpected cold snap last week and temperatures dropped well below freezing in my garage where I keep all my pool supplies. I have both liquid chlorine and powder shock treatments stored out there, plus some other liquid chemicals.

I'm concerned about whether these chemicals are still safe to use when my kids start swimming again in spring. Did the freezing temperatures damage them or make them less effective? I want to make sure the water quality will be perfect and safe for my family. Should I be planning to replace everything, or are some chemicals more resistant to freezing than others?…more
How Long to Wait Before Swimming After Pool Chemicals
Water Chemistry Easy 30 minutes 1,937 👍

How Long to Wait Before Swimming After Pool Chemicals

Apparently I'm standing in my garage staring at three different pool chemicals I added this morning with no clue how long I actually need to wait before diving in. Yesterday I added liquid chlorine to bring my levels up from 1.2 ppm to around 3.0 ppm, and I wasn't sure if we could swim that evening or needed to wait until the next day.

I'm planning to shock the pool this weekend with calcium hypochlorite since we've had some cloudy water issues, and I also need to adjust the pH which has been running high at 7.8. The kids are eager to get back in the pool, but I want to make sure I'm following proper safety guidelines. Do different chemicals have different waiting periods, and should I always test the water first regardless of how much time has passed?…more
Do You Need a License to Clean Pools? Requirements by State
Maintenance Easy varies 308 👍 1

Do You Need a License to Clean Pools? Requirements by State

Somewhere in the paperwork mess the previous owner left behind, I discovered they were running an unlicensed pool cleaning business right out of this house. But I'm completely lost on the legal side of things and don't want to get shut down before I even start.

Do I need some kind of special license just to clean pools? What about when I'm adding chemicals or fixing pumps and filters? I've heard different things from different people and I'm getting conflicting information about business permits too. Really hoping someone can break down what's actually required because I'm ready to make this career change happen!…more

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.
Pool Calculator Free all-in-one dosing tool