Popular New Guides Product Guides Tools Checklists My Pool

Results for "sodium bicarbonate"

606+ Answers 3 New This Week Free
How Long Do Pool Chemicals Last? Complete Shelf Life Guide
Water Chemistry Easy 10 minutes 277 👍

How Long Do Pool Chemicals Last? Complete Shelf Life Guide

Somewhere in my garage I've got old pool chemicals from last season, but I can't afford to replace them all — is there a way to test if they're still good for under $20?

Specifically looking for technical specifications on how long liquid chlorine maintains potency versus granular forms, and whether chemicals like sodium bicarbonate and muriatic acid have definitive expiration parameters. Storage conditions are controlled temperature and humidity, so assuming optimal preservation environment.…more
Do I Need pH Up and Down for Pool? Essential pH Guide
Water Chemistry Easy 15 minutes 223 👍

Do I Need pH Up and Down for Pool? Essential pH Guide

My husband casually mentioned that we're the only neighbors who stock both pH Up AND pH Down, and now I'm suspicious the pool store is playing us. That's like $40-50 just for pH adjustment chemicals alone!

Is this just upselling, or do I actually need to keep both products on hand? My pool seems to drift one way or the other pH-wise, but rarely both directions. Looking for some honest advice from people who aren't trying to empty my wallet every time I walk in for supplies.…more
Can I Add Pool Chemicals at the Same Time? Safe Mixing Guide
Water Chemistry Easy 30 minutes 190 👍

Can I Add Pool Chemicals at the Same Time? Safe Mixing Guide

Spent all week prepping for Saturday's pool party and now I'm scrambling to balance the water but wondering if I can add multiple chemicals together to save time.
The pool store gave me a bunch of different chemicals but didn't really explain the timing. I want to make sure I'm not going to create some dangerous reaction or mess up my water chemistry. Should I be spacing these out somehow?…more
Can I Use Pool pH Increaser in My Spa? Safe Chemical Guide
Water Chemistry Easy 15 minutes 182 👍

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
Do I Need to Winterize My Pool? Complete Regional Guide 2024
Winterizing Medium 4-8 hours 177 👍

Do I Need to Winterize My Pool? Complete Regional Guide 2024

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
How Long Do Pool Filters Last? Replacement Guide & Signs
Filters Easy 30 minutes 171 👍

How Long Do Pool Filters Last? Replacement Guide & Signs

After following my pool filter manual religiously for years, I'm baffled why it says replace every 6 months when mine still looks spotless after twelve. Have cartridge now but considering switching. How long do different filter types actually last before they need replacing? What are the signs it's time for a new one?…more
How Long to Wait Before Swimming After Pool Chemicals
Water Chemistry Easy 30 minutes 171 👍

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

Still stuck on this pool issue?

Get a personalized answer from a verified pool expert. Describe your issue and get step-by-step help.

Chat with a Pool Expert
1,742 pool owners helped · Avg response under 5 min
How to Raise Pool pH: Complete Guide to pH Increaser
Water Chemistry Easy 30 minutes 170 👍

How to Raise Pool pH: Complete Guide to pH Increaser

Before I dump chemicals into my pool, I'm trying to decide between adding baking soda or actual pH increaser to bring it up from 7.0. The pool store told me I need to raise it, but they mentioned a couple different chemicals and I'm honestly a bit confused about which one to use.

I've heard about soda ash and baking soda, but I'm not sure what the difference is or how much I should add to my 20,000 gallon pool. I really don't want to mess this up and swing it too far the other way. Should I be adding the chemicals slowly, and do I need to have my pump running when I do it? Any guidance would be really appreciated!…more
Can I Shock Pool After Adding Baking Soda? Complete Guide
Water Chemistry Medium 4-6 hours 168 👍

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 Vacuum Pool After Adding Chemicals? Safety Guide
Water Chemistry Medium 30-60 minutes 168 👍

Can You Vacuum Pool After Adding Chemicals? Safety Guide

Despite adding chlorine shock and algaecide yesterday, is it dangerous to vacuum my pool with my kids swimming here regularly? Can I start vacuuming immediately or do I need to wait? Don't want to mess up the chemical distribution or damage my equipment.…more
How to Increase Pool Alkalinity Fast - Complete Guide 2024
Water Chemistry Easy 30 minutes 166 👍

How to Increase Pool Alkalinity Fast - Complete Guide 2024

So there's this pool guy telling me to drain and refill my entire pool just because my alkalinity hit zero, but that sounds like expensive overkill for some cloudy water. Every time I try to balance the pH, it just crashes back down within a day or two.

I've got a 20,000 gallon pool and honestly I'm tired of throwing random chemicals at this problem. What's the RIGHT way to get my alkalinity back up to where it should be? I need specific amounts and steps because clearly what I've been doing isn't working.…more
Can I Shock Pool After Adding Alkalinity? Timing Guide
Water Chemistry Medium 6-8 hours 165 👍

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
Can Pool Chemicals Cause a Rash? Complete Guide & Solutions
Water Chemistry Medium 2-3 hours for water correction 158 👍

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
Why Pool Alkalinity Gets Low: 7 Common Causes & Solutions
Water Chemistry Easy 30 minutes 155 👍

Why Pool Alkalinity Gets Low: 7 Common Causes & Solutions

Opened my pool this morning and the alkalinity had crashed again — only happens when it's above 85 degrees but stays perfectly normal during cooler weather. My kids swim in it almost daily during summer, so I'm really concerned about whether this is safe for them.

I'm trying to figure out what's causing this so I can fix it properly. We've had a lot of rain lately, and I've been shocking the pool more often because of increased usage. Could these things be making the alkalinity drop? What are the main reasons pool alkalinity gets low, and should I keep the kids out until I get it balanced again?…more
How Long Pool Chemicals Take to Settle - Complete Guide
Water Chemistry Easy 2-48 hours depending on chemical type 148 👍

How Long Pool Chemicals Take to Settle - Complete Guide

Halfway through adding my pool chemicals, they're just floating on the surface for hours instead of dissolving like they normally do. After adding chemicals like chlorine, pH adjusters, or alkalinity increasers, I want to ensure they're properly mixed before taking water samples for testing.

My pump runs approximately 6-8 hours daily, and I'm concerned about getting inaccurate readings if I test too early. What's the standard circulation time required for different types of pool chemicals to fully distribute throughout the water? I want to establish a proper testing protocol to avoid chemical imbalances.…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