I'm a new pool owner that is excited to find this resource. I have about a 30,000 gallon pool with a saltwater chlorine generator.
The water appears clear, but definitely has scattered small black spots that smear green on the bottom.
A couple of days ago, I just tried adding 6 lbs of shock without doing testing and did some brushing but am not sure how I should proceed from here. There are still some visible algae spots.
I just purchased a test kit and these were some of the results most recently after I tried shocking.
CYA 0 (is this often seen, or is this a problem?) With my test kit, the reaction was completely clear.
I have at home muriatic acid as well as 1 lb packs of 68% calcium hypochlorite.
I've been looking at the SLAM and algae pages, but was wondering how I should approach things now more carefully. Should I just try to correct the pH at this point, then try and shock again. Should I stop using the calcium hypochlorite and go to liquid bleach? Should I try to address the CYA of 0? What should my FC target be if CYA is 0?