I moved into my first pool 3 weeks ago, and have been trying to get chlorine levels up using pucks and shock. Like most people here, I started at the dreaded pool store, blew a bunch of time and money, and still had 0 chlorine in the pool. They told me I might need to put up to 50 lbs. of shock (at $5/lb) to get the chlorine levels up. So I started researching online and found TFP. After reading a bunch of the posts on here, I ordered a good test kit (Taylor) and decided to follow some of the advice on this site.
I got my kit yesterday, here are my first readings:
CC = 0.4
PH = 7.6 (started at 7.2, but I brought it up with some soda ash)
CYA = 50
Using the Chlorine/CYA chart, it looks like I need to get my FC to 20 for shock level, which, according to Pool Math is about 1000 oz. of 8.25 bleach. Being new to this, dumping that much bleach in my pool makes me nervous, so last night I put about half that much in - 484 oz, which should have brought the FC up to about 10 (it was too late to stay up and test again).
I took a reading again this morning and got this:
FC = 10.4
CC = 1.5
PH = 7.6
CYA = 50
So I got the FC up as expected and it held overnight! CC also came up quite a bit. Anybody have any advice? Seems like I might not have to follow the SLAM procedure, but I'm not sure. How do I lower the CC back to 0? Should I try to get my CYA levels down or is 50 acceptable?