I recently bought a house with a pool and started to do the pool maintenance after the previous owner's pool guy retired. He gave me some tips to clean, balance, and chlorinate the pool... but now I am running into some issues. He recommended I use 1 or 2 "In the Swim" 3 inch Chlorine tablets (99% Trichloro-S-Triazinetrione) each week and "In the Swim" Pool Shock (68% Calcium Hypochlorite) each week or as needed. I bought the TF-100 test kit a month or so ago and noticed I had very high CYA values. I just tested the pool today and here are my values:
I know my CYA is super high, when I use the TF-100 CYA test I can't see the black dot well before the water even approach the 100 tick mark. After reading the forums here I realize I should be moving over to liquid chlorine and save the tablets for when I am away... which I plan to do. I also saw I need to do a partial drain to lower my CYA... but after reading a bunch of stuff online I am afraid of popping the pool if I do a partial drain.
Is this something I need to worry about even if I only do a partial drain? I live in the Orlando Florida area... and honestly have no clue what my water table levels are in the area. I also have no clue if I have a hydrostatic valve or not. Should I be hiring a professional company... or is this something I can do myself? I know I can drain water out through my Hayward filter.... but don't want to attempt it if I could cause serious damage to my pool. Any advice would be highly appreciated!
Thanks so much,