How many tri-chlor pucks at a time?

[aylad]

You're going to go through an awful lot of bleach if you are depending on just the trichlor pucks to raise your CYA. They won't raise it that fast. Even when you add CYA in powder form (which is what you're going to need to do to get your initial CYA level) it takes about a week for it all to dissolve. Until then, the sun is eating up your chlorine.

Janet

[chem geek]

This post gives some alternatives for getting CYA into your pool faster. Trichlor will also work, but is far slower. I'm using Trichlor in my own pool right now to raise my CYA, but I'm starting with 10 ppm and raising it to 20-30 ppm AND I have an opaque pool cover so don't lose much chlorine to sunlight anyway.

Richard