Results for "chlorine dosing"

Maintenance Easy 30 minutes 212 👍 0

Do I Need to Shock My Pool Every Week? Complete Guide

Called three pool stores about weekly shock treatments and they're all pushing $15 products, but is this actually necessary or just a sales pitch? My pool has been relatively clear lately and I've been pretty good about keeping up with daily chlorine levels. But then I had one algae outbreak earlier this season and now I'm paranoid about skipping the weekly shock treatment. Is weekly shocking really required, or are there specific situations when I actually need to do it? I want to maintain a healthy pool without going overboard on chemicals.…more

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Above Ground Easy 30 minutes 244 👍 0

Do You Need Chlorine for Above Ground Pool? Complete Guide

Three weeks into researching my new above ground pool and I'm still torn between using traditional chlorine or going completely chlorine-free. I've seen some alternative sanitization systems advertised, and I'm wondering if chlorine is truly required or if there are viable alternatives that can maintain safe water conditions.

Specifically, I need to know if skipping chlorine altogether would compromise water safety and what the actual consequences would be for swimmer health and water quality. What role does chlorine play in preventing bacterial growth and algae formation in above ground pools compared to in-ground systems?…more

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Water Chemistry Easy 30 minutes 225 👍 0

When Can You Swim After Shocking Pool? Safe Wait Times

I noticed the pool at my new rental was cloudy so I shocked it yesterday evening, but now I'm completely lost on when it's safe for my kids to jump back in. The pool store guy said "wait a few hours" but I've read everything from 8 hours to 24 hours online. The chlorine smell is still pretty strong this morning. I used liquid shock (sodium hypochlorite) and added about a gallon to my 20,000 gallon pool. How do I know when the chlorine levels are actually safe for swimming? I don't want to keep the kids out longer than necessary, but I definitely don't want to risk any chemical burns or irritation.…more

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Algae Green Pool Easy 15 minutes 41 👍 1

Pool Algaecide Types: Quat vs Poly-Quat vs Copper

Nobody warned me the algaecide aisle would feel like a chemistry exam. My pool store's manual just says 'add algaecide weekly,' but when I actually went to buy some, there were four completely different product types all using that same word — a cheap 'quat' bottle for $14, a poly-quat one for $50, a blue copper-based formula, and something mentioning sodium bromide. The manual acts like they're interchangeable, which clearly they're not given the price gap.

I've got a 20,000-gallon plaster pool that stays open May through October here in Georgia. Right now I'm in maintenance mode — no visible algae — but last summer I had a bad mustard algae breakout that took weeks to clear. I want to actually understand what I'm buying this time. Which of these types is doing what, which ones foam, which ones can stain my plaster, and which one makes the most sense for weekly prevention versus nuking an active bloom?…more

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Water Chemistry Easy 15 minutes 327 👍 0

Can I Use Pool pH Increaser in My Spa? Safe Chemical Guide

Noticed I'm always running low on spa pH increaser and wondering if this is a dumb question, but can I just use my pool's pH increaser instead? I have both a pool and a hot tub, and I noticed my spa's pH is running low. I have some pH increaser that I bought for my pool - can I use the same product in my hot tub, or do I need to buy separate chemicals?

The pool store didn't really explain if there's a difference between pool and spa chemicals, and I don't want to mess anything up. If I can use the same pH increaser, do I need to adjust how much I add since the hot tub is obviously much smaller than my pool?…more

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Water Chemistry Easy 30 minutes 504 👍 0

How to Lower Pool pH: Safe Methods & Dosing Guide 2026

I got my pool pH sitting at 8.2-8.4 despite following every YouTube tutorial on lowering it - somehow I'm just making things worse by randomly dumping pH decreaser. I'm worried I'm going to mess something up even worse.

What's the proper way to bring pH down safely? I have a 15,000 gallon pool and I want to do this right for once. Should I use the liquid stuff or the powder? And how much should I actually be adding? I'm done with the guesswork - I need a real plan that actually works.…more

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Algae Green Pool Medium 2-7 days 272 👍 0

Does Pool Algae Consume Chlorine? Understanding Chlorine Loss

About every time the temperature hits 85°F outside, my pool's chlorine levels nosedive to almost nothing, but stay rock solid during cooler days. I'm adding the same amount of chlorine I normally do, but it seems like it's disappearing quickly. A friend mentioned that algae might actually be 'eating' or consuming the chlorine somehow. Is this actually what's happening? I'm trying to understand the science behind it so I can tackle this problem more effectively. Should I be adding more chlorine, or is there a different approach I should take?…more

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Water Chemistry Medium 2-6 hours 219 👍 0

Should You Shock Pool When Chlorine Is Already High?

Called my pool guy about my 8-year-old chlorination system that's overdosing — should I shock anyway or risk algae growth? My pool's total chlorine reading is showing high levels, but I'm uncertain whether shocking is still necessary or potentially harmful in this situation.

Specifically, I want to understand the relationship between total chlorine, free chlorine, and combined chlorine levels when determining shock treatment protocols. What's the proper testing sequence and decision matrix for shock treatment when initial chlorine readings appear elevated?…more

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Salt Water Easy 5 minutes 282 👍 0

Do Salt Water Pools Have Chlorine? Yes - Here's Why

Already asked my neighbor about her "chlorine-free" saltwater pool, but mine definitely has chlorine — what am I missing here? I have a 20,000 gallon inground pool and I'm considering converting to a salt water system because I thought it meant no more dealing with chlorine chemicals. My neighbor has been telling me that salt water pools are "chlorine-free" and that's why they're gentler on skin and eyes.

But when I was talking to a pool supply store, the guy mentioned something about salt water pools still having chlorine, just generated differently? I'm confused because if there's still chlorine involved, what's the actual difference? I've been manually adding liquid chlorine to my pool for years and my levels typically run around 2-3 ppm, but I'm tired of the constant chemical additions and storage issues.

Can someone explain whether salt water pools actually contain chlorine or not? And if they do, how does that work with the salt system?…more

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Water Chemistry Medium 2-4 hours initial treatment 341 👍 1

Can You Shock Pool With Liquid Chlorine? Complete Guide

Replaced my pool's chlorine tablets with liquid this season — planning to shock my 10,000 gallon pool Saturday, what supplies do I need ready? Have liquid chlorine on hand but not sure if it's effective for shocking or if I need granular shock instead.

How much liquid chlorine would I need to properly shock? Want to raise chlorine levels by about 10ppm.…more

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Algae Green Pool Medium 4-6 hours 1,274 👍 16

Can I Shock Pool After Adding Algaecide? Complete Guide

Spent all morning watching my pool turn green with algae patches and now I'm holding bottles of algaecide and shock with no clue which to use first. But I'm not sure about the timing - can I add both in the same day? Should I put the algaecide in first, or does it matter?

Also, if I can use both, how long should I wait between adding them? Don't want to mess up my water chemistry or waste expensive chemicals by doing this wrong!…more

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Water Chemistry Medium 2-3 hours over 2 days 239 👍 0

Can Pool Chlorine Make You Itchy? Causes & Solutions

Finally planning to tackle my itchy pool problem this Saturday — need to figure out why my arms and shoulders keep getting irritated despite maintaining 2-3 ppm free chlorine in my 20,000-gallon inground pool. I maintain pH around 7.4 and alkalinity at 100 ppm, so the basic chemistry seems fine. The itching mainly affects my arms and shoulders where I spend the most time in the water.

I'm wondering if there's something I'm missing about chlorine that could be causing this skin irritation. I shock the pool weekly with calcium hypochlorite and use trichlor tablets in my skimmer, but the itchy feeling has gotten worse over the past month. Could it be the chlorine itself making me react this way, or is there another water chemistry issue I should be looking into? I've tried moisturizing after swimming but that only helps temporarily.…more

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Water Chemistry Medium 15 minutes 228 👍 0

Can I Use Pool Chemicals in My Spa? Safe Chemical Guide

Nobody told me that looking at my pool chemical shelf right now with all these bottles means I'd have no clue which are safe for the spa. I want to make sure the water is properly sanitized for the kids, but I'm concerned about whether pool chemicals work the same way in the smaller, hotter water environment.

I currently have chlorine tablets, pH adjusters, and some alkalinity products for our pool. Are there any specific pool chemicals I should avoid using in the spa? I just want to ensure the water is safe and clean for my family without accidentally creating any health risks by using the wrong products.…more

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Water Chemistry Medium 1–2 hours for testing and shock treatment; ongoing prevention is a daily habit 41 👍 1

What Are Chloramines in a Pool? Causes & Fixes

My backyard pool has developed a really strong chemical smell, my kids come out with red burning eyes every single time they swim, AND a neighbor mentioned my chlorine levels might actually be too low despite the overpowering odor — all at the same time. I test my water regularly and I keep adding chlorine, so I'm confused why it smells so strong and still seems to be underperforming as a sanitizer.

Someone at the pool store told me what I'm smelling isn't really chlorine at all — it's something called chloramines or 'combined chlorine' — and that this actually means my free chlorine is being used up and isn't working properly. That really surprised me because I always assumed the strong smell meant there was too much chlorine in the water.

Can someone explain exactly what chloramines are, where they come from, and what I need to do to get rid of them? I want to understand the chemistry so I'm actually solving the problem and not just dumping in more product that won't help.…more

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Salt Water Easy 15 minutes 207 👍 0

Do Salt Water Pools Use Chlorine? The Complete Truth

Since getting my salt water pool, I've been too embarrassed to ask this probably obvious question: does it actually use chlorine or not? Some say salt water pools are chlorine-free, others say they still have chlorine. Which is it?

Looking at switching from traditional chlorine but want to understand what I'm actually getting into. Does the salt system eliminate chlorine completely or not?…more

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