Pool care guides
Practical guides for pool chemistry, pumps, filters, heaters, salt systems, automation, and water problems.
Quick 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 guideQuick Answer You just shocked your pool. Now you're staring at a bottle of algaecide, wondering when to pour it in. Add it too soon and you've wasted.
Read guideYou've got green water staring back at you, and you're ready to throw everything at it. So can you put algaecide and shock in pool at the same…
Read guideQuick answer: Use pool shock first when you already see algae because chlorine does the heavy killing and oxidation. Use algaecide mainly as a backup or.
Read guideQuick Answer To vacuum a pool manually, attach the vacuum head to a telescopic pole, connect and fully prime the vacuum hose, attach the hose to the.
Read guideQuick answer: Algaecide usually is not clearing your pool because active algae needs chlorine shock, brushing, filtration, and balanced water first. Test.
Read guideUse the Pool Chemical Calculator app for chlorine, pH, alkalinity, stabilizer, salt, calcium, borates, and more.