Pool care guides
Practical guides for pool chemistry, pumps, filters, heaters, salt systems, automation, and water problems.
Water Chemistry Targets for Winter Closing Get your water balanced before you close — this protects your pool surfaces and equipment all winter. Here are.
Read guideQuick answer Close your pool when the water has stayed below 65°F for 5-7 straight days and the next 7-10 day forecast does not show a warm rebound.…
Read guideAffiliate disclosure: As an Amazon Associate, Pool Chemical Calculator may earn from qualifying purchases. Quick answer The Complete Pool Closing.
Read guideQuick answer A good pool closing chemical kit should include non-chlorine shock, winter algaecide, stain and scale preventer, and clear dosage.
Read guideQuick answer Pool closing chemicals should be added after the water is clean and balanced: adjust alkalinity, pH, and calcium first, then add shock.
Read guideQuick answer Combined chlorine in a pool is used-up chlorine that has reacted with sweat, urine, sunscreen, algae, or other contaminants. Keep combined.
Read guideQuick answer Run the overnight chlorine loss test when chlorine drops fast but the cause is not obvious. Test free chlorine after sunset, test again.
Read guideWhat Causes Chlorine Demand in the First Place? Chlorine demand isn't a mystery — it's chemistry. Your pool water contains stuff that reacts with.
Read guideQuick Answer The best algaecide for most pools is a non-foaming polyquat 60 formula because it prevents green algae without adding copper or creating.
Read guideThat green tint creeping along your pool walls? It's algae, and it's about to ruin your weekend. Knowing how much algaecide to add to your pool can mean.
Read guideYou just poured algaecide into your pool, and now the kids are asking when they can jump in. So, can you swim with algaecide in pool water safely?…
Read guideQuick Answer You just dumped algaecide into your pool to knock out that green invader, and now your kids are asking when they can jump back in. It's…
Read guideUse the Pool Chemical Calculator app for chlorine, pH, alkalinity, stabilizer, salt, calcium, borates, and more.