adding cya

[jhm]

A real clue that you are struggling still with algae is the FC dropping all the time.

I didn't know that. I've been battling mustard algae lately. I don't seen any now, but I go through a gallon of chlorine (10%) a day (25k gallon pool). My CYA is at 40. I thought the loss was due to sunlight (so. cal) but maybe I haven't won the battle after all.

What do you think?

Thanks!

[chem geek]

jhm,

See if the chlorine drops overnight. If it does, you've got algae or something consuming your chlorine. If not, then the losses are due mostly to sunlight.

Richard