Hello everyone. I bought a new house a few months ago and I just opened the pool last week. The pool is 25K gallons, plaster liner, DE filter, and inline chlorinator.
After opening I took a water sample to leslies. The FC was at 4 PPM, PH was at 7.4. The only alert was CYA being high at 100.
One week later I took another water sample to leslies. Same PH, same CYA, however FC dropped to .5 PPM. I bought a bucket of calcium hypochlorite shock and added a pound. I waited and tested myself today with a home kit and it looks like the FC is at about 2 PPM. Leslies said its normal to shock once a week. That seems like it would be overkill but this is all new to me so I am not sure.
I am reading about high CYA and how it can lead to chlroine lock. Is this something I should worry about? Is there anything out there to lower CYA without draining?
Also I believe I read those pucks (http://www.lesliespool.com/leslies-3...orine%2520puck) can increase CYA as well. Are there any pucks out there not made of the Trichloro-s-trianzinetrione that I can buy to maybe help the problem?
Any thoughts or ideas? Just a note the pool water looks crystal clear.
Moderator Note: This is two interrelated threads merged together. - tim5055