Pool School
HASA Liquid Chlorine for Pools: Dosing & Use Guide
Learn how to dose HASA liquid chlorine by pool volume, add it safely, and why it won't raise CYA like trichlor tablets. Includes a dosing chart.
How to Prevent Pool Algae: LA Pool Owner Guide
Stop pool algae before it starts. Learn the weekly routine for chlorine and CYA balance, pH, brushing, phosphates, and circulation in Southern California.
Why Is My Pool Water Cloudy? Causes & Fixes
Cloudy pool water usually traces to low chlorine, high pH, poor filtration, algae, or scale. Run the right test, find your cause, and get clear water faster.
What Is Cyanuric Acid in a Pool?
Cyanuric acid (CYA) shields chlorine from UV. Learn the ideal 30-50 ppm range, signs of low or high CYA, and how to fix over-stabilization fast.
How to Test Pool Water: Strips, Kits & Digital
Learn how to test pool water the right way: take a clean sample, then read it with strips, a drop kit, or a digital tester for accurate results.
Pool Safety Cover Guide: Types, Sizing & Use
Learn how to choose the right pool safety cover. Compare mesh, solid, and hybrid types, get sizing tips, and understand ASTM F1346 and California safety law.