Ok, I know using tabs isn't the preferred way, but I'm gone a lot, and it's the best option for me to have the pool "maintain itself" while I'm not around.
I actually just popped a new Pentair 320 on 2 weeks ago, as I was pretty sure the old one was shot, it was barely going through any of the tabs (3"), in a weeks time, the stack will drop a few inches at most, while on the highest setting. Friday I switched the water feed from the bottom to the top to see if it would make a difference.
I've been told it should run through the whole stack in roughly a weeks time.
My CYA is a little high, in the 90's, but I don't think that's high enough to put me in a demand issue. Still though, unless I add a little shock once a week, the chlorine continues to just slowly fall out. On Friday it was 2.7 & 2.8.
I'm at a loss, not sure what else could be causing the problem. A little background info..... the previous owner did have a Nature2, mineral thing on there, but it isn't used, no cartridge in it & it's simply just an empty reservoir. I have a DE filter that was cleaned within the last 4-5wks. The only bad part with my pool is the plaster is failing. Tree fell on it and the previous owner plastered over the plaster and now it's starting to chip, plan on having it chipped off this winter and starting fresh.
Any ideas are greatly appreciated!