I have a 12,000 gallon plastered gunite pool that I've been maintaining almost exclusively with 11% liquid bleach for about a year now. After recovering from excessive CYA last year I'm very careful of monitoring and maintaining my CYA levels. I try to keep CYA at about 30, I haven't had a problem with it drifting lower but I can only measure it down to about 25-30 with the Taylor kit and I want to know just what it is.
The CYA level drops very slowly due to normal water losses so I must bolster it occasionally. I have some Clorox Active 99 3" Trichloro tablets I'd like to use-up and figure using them to bolster CYA may be their best use. My question is how to judge how effective they'd be at that role and how to judge how many to use for a particular adjustment. I found a thread on TFP where someone with a 12,000 gallon pool found an increase in CYA of 30 by using only a total of 5 pucks. That translates to an increase of 6 CYA per puck. That seems like a lot. Does that seem reasonable and if not can someone give me an idea of what to expect?
The CYA level drops very slowly due to normal water losses so I must bolster it occasionally. I have some Clorox Active 99 3" Trichloro tablets I'd like to use-up and figure using them to bolster CYA may be their best use. My question is how to judge how effective they'd be at that role and how to judge how many to use for a particular adjustment. I found a thread on TFP where someone with a 12,000 gallon pool found an increase in CYA of 30 by using only a total of 5 pucks. That translates to an increase of 6 CYA per puck. That seems like a lot. Does that seem reasonable and if not can someone give me an idea of what to expect?