Hi Folks -
Great site and lots of useful information. Hoping you can shed some light on my situation. This is my 4th year with the pool and so far no issues. This season I started to notice that I had very low to almost zero FC in the pool. The SWG has always been set at 45% (Hayward Turbo Cell T-15). Checked and cleaned the cell and it had no buildup at all.
I've never used bleach (didn't even know about it till recently) and the SWG has always been able to keep up. Long story short, I realized my CYA was low so I raised it. Now the pool seems to be holding FC at about 3 and CC at 0 (set at 55%). I started looking at understanding SLAM and adding bleach and then found "the bucket test". I put a 5 gallon bucket of pool water in the garage, added 1oz. of 8.3% clorox and the FC seemed to initially rise but then fell to 0 and the TC when crazy dark off the scale.
So my main question is why? I though adding bleach would raise the FC, not lower it. I'm trying to figure out if I have a problem or not. The pool is crystal clear but in looking into the bleach thing I think I got myself all confused.
Thanks in advance!
I believe the test kit I have is the Leslies version of the TAYLOR K-2006 ( FC only goes up to 5)
Pool - 28,000 Plaster, SWG