Hi all, just moved to Missouri last fall and bought a house with a 36,750 gal IG, vinyl pool. I have a sand filter (Cristal-flo) and Centurion pump (faceplate is corroded so I'm not sure about the HP). I really did not have to do much of anything before we closed the pool for the winter (used a pool service company). But now that we've opened the pool, I've been trying to learn as much as I can from your site so I can take care of the pool myself. (I was only pool stored for 2 weeks). I got my Taylor K-2006 test kit and have been testing every day.
These were the numbers from the pool store, before I got my kit
and after measuring for myself (couple of weeks later)
FC - 8.5
CC - .5
ph - 7.7
My FC loss overnight is nil. I'm uncertain about my CYA levels since there was such a difference from the pool store test, but I suspect my test is more accurate. I loose quite a bit of chlorine during the day. To bring my CYA levels up I've been using tri-chlor pucks in my chlorinator. (Also hoping to bring my pH down a bit.) So far I've dissolved 4 8 oz pucks and just added 4 more pucks. I think 32 oz of tri-chlor will raise my CYA levels by 3.6 ppm. can anyone confirm? I will test again after the current pucks dissolve. I have been adding 1 gal of Vertex (10%) each night. Usually my FC levels are around 3-5 ppm in the AM. I think I have my chemical situation under control so far (knock on wood).
Couple of questions. My pump shroud has 2 pin hole leaks. Can i patch those? and with what? Also, I have no idea how old/good the sand is in my filter. The pressure on it reads 20 lbs but it seems like it never builds up past that.
Any advice or comments?
Great site and lots of useful information.