Results for "calcium-hardness"

Water Chemistry Easy 5 minutes 226 👍 0

How Is Pool Chlorine Made? Complete Manufacturing Guide

Always assumed pool chlorine was just bleach in a fancy package until my chemistry teacher neighbor said it's actually manufactured completely differently. Now I'm curious — what exactly goes into making pool chlorine and is there really a difference between the cheap and expensive stuff?…more

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Water Chemistry Easy 30 minutes 1,937 👍 0

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

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Salt Water Medium 45 minutes 724 👍 0

How to Know If Your Pool Salt Cell Is Bad - 7 Warning Signs

Opened up my new place's pool equipment for the first time and this salt cell has crusty white buildup everywhere while chlorine levels keep tanking.

What are the telltale signs that a salt cell is actually failing? I don't want to replace it unnecessarily, but I also don't want to keep throwing money at chemicals if the real problem is a dead cell. Are there specific things I should check or test to know for sure?…more

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Salt Water Easy 30 minutes 671 👍 0

How to Know If Your Pool Salt Cell is Working - 7 Easy Tests

About to sound totally clueless here, but with my salt levels perfect at 3000-4000 ppm, how do I know my salt cell is actually producing chlorine?

What specific visual and chemical indicators should I be monitoring to determine if the salt cell is generating adequate chlorine output? I'm looking for concrete testing methods and observable signs that will definitively show whether the electrolytic process is functioning correctly or if the cell requires maintenance or replacement.…more

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Water Chemistry Medium 2 hours setup 231 👍 1

Can You Store Pool Chemicals in a Deck Box? Safety Guide

I opened my deck box yesterday to grab pool shock and noticed a strong chemical smell — did I mess up storing chlorine tablets and pH adjusters out here?

I know chemicals can be finicky, but these deck boxes seem pretty sturdy. Anyone know if this is actually safe or if I'm asking for trouble? Don't want to accidentally create some kind of chemical reaction disaster in my backyard!…more

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Salt Water Medium 2-3 hours 347 👍 0

Can Salt Water Pool Cause Rash? Quick Solutions & Prevention

Tried everything to stop these red, itchy rashes on my kids from our saltwater pool. I thought saltwater pools were supposed to be gentler on skin than regular chlorine pools, so I'm confused about what's causing this. Could it be something wrong with the water chemistry? The pool water looks clear, but I'm wondering if there are invisible issues that could be irritating their skin. What should I be checking for to make sure the pool is safe for them to swim in?…more

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Water Chemistry Medium 45 minutes 326 👍 0

Can You Use Pool Chlorine in Hot Tub? Safety & Compatibility

Replaced my hot tub chlorine with leftover pool chlorine yesterday and now the water's still cloudy even though it's burning through sanitizer like crazy. The spa chemicals at the store are ridiculously expensive compared to pool chemicals. I have a bunch of pool shock and liquid chlorine left over from summer - can I just use those in my hot tub instead? I tried using some pool shock last week but the water got really harsh and irritated everyone's skin. My spa dealer keeps pushing their expensive "spa-only" products but I'm wondering if it's just a marketing gimmick. Are pool and spa chemicals really that different, or am I missing something important here?…more

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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

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Maintenance Easy 8-24 hours 225 👍 0

How Long After Pool Shock Can You Swim? Safety Guide

Turned my pool into a crystal-clear paradise with shock treatment and now I'm armed with test strips, ready to master the perfect timing for safe swimming. I'm worried about letting them swim too soon and want to make sure the chemical levels are completely safe.

How long should I wait before it's okay for them to swim again? I have a test kit but I'm not sure what the chlorine levels should be at before I give them the green light. I'd rather be overly cautious when it comes to their safety.…more

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Salt Water Medium 10 minutes 619 👍 0

How Pool Salt Cells Work: Electrolysis Process Explained

I tried figuring out how my neighbor's salt cell creates perfect chlorinated water while mine struggles, but I'm completely lost on how salt actually becomes chlorine.
Like, I get that I add salt to the pool and somehow it becomes chlorine, but what's the actual process happening in there?

Is it some kind of chemical reaction or what? And why does my pH always seem to creep up when the salt cell is running - is that related to whatever's going on inside the cell too?…more

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Water Chemistry Medium 2-3 hours for setup 568 👍 2

Can I Store Pool Chemicals Outside? Safe Storage Guide

Halfway through my morning coffee, I spotted my pool chemicals sitting in direct sunlight by my detached shed that definitely weren't there yesterday. Shed gets hot/cold with seasons and sometimes damp. Garage stays more consistent but still gets chilly in winter.

Which is better for storing chlorine, muriatic acid, and shock? Or do I need to bring everything indoors? Just want to avoid any safety issues or chemicals going bad.…more

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Water Chemistry Medium 45 minutes 483 👍 12

Can Pool Chlorine Clean Concrete? Safe Methods & Alternatives

Between the humidity and recent rain, my concrete pool deck started showing these nasty green algae stains last week and now I'm wondering if pool chlorine can clean them off. My concrete pool deck is absolutely filthy with algae stains and dirt buildup, and nothing seems to work. I've scrubbed until my arms hurt and tried different cleaners, but these green stains just won't budge.

I have tons of pool chlorine sitting around and I'm wondering if I can use that to blast these concrete stains away? I don't want to damage the surface or create some kind of chemical disaster, but I'm running out of options. If chlorine works, what's the right way to dilute it? And honestly, are there better alternatives that might actually get this mess clean without all the guesswork?…more

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Water Chemistry Easy 24 hours 448 👍 0

Can I Swim in High Alkalinity Pool? Safety & Solutions

This morning I'm standing in the pool store aisle staring at bottles of alkalinity reducer with no clue which one I actually need after my pool tested high. They're making it sound like it's dangerous to even dip a toe in the water, but I'm wondering if they're just trying to upsell me again.

Can I actually swim in my pool while the alkalinity is high, or is this a real safety issue? I'm getting tired of spending hundreds every time something is slightly off with my water chemistry. If it's not immediately dangerous, I'd rather take some time to research DIY solutions instead of buying whatever overpriced fix they're pushing this week.…more

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Water Chemistry Medium 48 hours 437 👍 0

Can You Shock Pool After Adding Stabilizer? Complete Guide

Apparently I added stabilizer to my pool yesterday but now I'm second-guessing whether it's safe to shock it — did I mess up the timing? The pool store told me I needed it because my chlorine wasn't lasting very long in the sun. Now I'm wondering when it's safe to shock the pool - can I do it right away or do I need to wait?

I've heard that stabilizer takes time to dissolve and I don't want to mess up the chemical balance. Should I test the CYA levels first? And does having stabilizer in the water change how much shock I should use? Any guidance would be really appreciated!…more

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Maintenance Medium 2-4 hours 258 👍 1

Do I Need to Shock My Pool in Winter? Complete Guide

Between the musty, swamp-like stench seeping through my pool cover and that weird chemical smell hitting me every time I walk by, I'm wondering if I should still be shocking it this winter.

I have a 20,000 gallon inground pool that I keep open year-round here in the Southeast, but I've heard conflicting advice about whether I need to shock as often in winter as I do in summer.

Right now my water temperature is around 55°F and my free chlorine levels have been holding steady at about 2.5 ppm. During summer I was shocking every two weeks religiously, but with the cooler temps and less usage, I'm wondering if I can scale back. Does the type of pool setup (open vs closed for winter) make a difference in shocking frequency? And should I be adjusting based on water temperature or just stick to my summer routine?…more

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