battling green algae while cya = 0

[Pappy]

Tell us about your pool. Above ground or in ground. Concrete or vinyl? What is the make and model of your pump and filter.

You are right about the bleach, add it after the sun is off your pool, so doesn't get burned up by uv. Pool Doc usually recommends you get the pool clear of algae before adjusting anything else. If your pH is below 7 or above 8, go ahead and correct that.

[vinouspleasure]

thanks, should be in my signature now

[Watermom]

Welcome back!

Any idea what your CYA reading was when you closed? Since it is now 0 and you have a big chlorine demand, it's a good bet that your CYA biodegraded over the winter and you are now dealing with the results of that. It may take a lot of bleach to clear the pool of the byproducts, but hang in there and keep hammering it with bleach!