hi there - been a member for 2 years or so - did the pool school - bought the tf-100 test kit or whatever it is.
I use liquid chlorine and have had pretty good success the last 2 years.
Now my question, is my CYA levels. I live in Florida with intense heat all day 90 degrees + and complete sunlight all day and it rains pretty much every day - no screen. I just cut a tree down which gives my pool about 8 hours more sunlight. I have had trouble keeping my CYA up to a normal 30-50 level. I've heard some people do even higher for Florida pools maybe 50-70. I've had issues in the past where I've had CYA way to high and had to refill because my chlorine was ineffective. So now I'm cautious with it. BUT now i cant keep the levels at a reasonable amount - it literally will get to 40-50 and within two weeks be 10 or zero. I'm going through tons of the stuff. I've tried super shocking to off-the-chart levels to kill any ammonia or whatever it is that helps the CYA not breakdown as fast. I'll have a 30 CYA and a 5-7 FC 0 CC test and then a week later, 0 FC and 0 CYA.
Maybe its just the intense weather making my pool hard to keep up wtih? I havent had any problems with algae (yet) but i've gone through a frog infested green swamp before. Any suggestions? I cant find any posts on fast dissappearing CYA - some people only deal with it a few times a season if that.