How-to

Step-by-step pool chemistry and maintenance fixes.

How-to

How to Shock a Pool: Step-by-Step

How to shock a pool the right way: when to do it, which shock to use, how much liquid chlorine or cal-hypo per 10,000 gallons, and when it's safe to swim again.

How-to

Why Is My Pool Green? 5 Causes and the Fix

Why is my pool green? The 5 usual causes (low chlorine, high stabilizer, high pH, poor circulation, and metals), how to tell algae from copper, and how to clear it step by step.