Algicide 60%

[poolrx]

John,

Poly 60 should have no effect on CYA. Don't know why the cl levels dropped unless along with the poly 60 the cl is killing off the rest of the algae. My levels fluctuated until the algae was gone. If you had a hot sunny day it will drop your cl quickly. The 10 ozs of stablizer should help prevent that.

Joe

[tundraSQ]

It has been posted in here many times that the Polyquat WILL drop the FC level, so you will need to compensate for that.

[poolrx]

It has been posted in here many times that the Polyquat WILL drop the FC level, so you will need to compensate for that.

Didn't know that

Always went by Ben's notes regarding poly 60 "Generally, higher chlorine is the best way to control or kill algae. But, occasionally, an algaecide can help. There's really only one product that you can use without risking some rather nasty side effects, including pool stains, green hair, problems with combined chlorine, or disappearing chlorine, and so one. "

I haven't had a problem with it dropping fc levels, but I normally only use 3-4 ounces a week. When using the larger amounts a few yrs ago dealing with the algae I just attributed the lost of cl to fighting the algae.

[ytngt]

I never noticed a drop in FC associated with Poly but anything is possible.

I use Poly as a prevenative measure so there is not an algae bloom when I am adding it. That might be why I don't notice any perceivable cahnge in FC after adding Polyquat.