I have a new home that has a pool that was recently refinished and it is diamond brite midnight blue. What is the best method to get chlorine in the pool without harming or bleaching the plaster? I keep testing the water and the chlorine is low. Currently it has a floater in the pool and a feeder attached to the pump. I don't want to put turbo shock in there for fear of it bleaching out the plaster color. Any ideas on what is the best method? I live in Tx as well so the water is really hard which I've been told is prone to getting calcium? not sure how much validity is in that. I asked a guy at the local store and he made it sound like it wouldn't get a calcium buildup from the hardness.

I appreciate any help! I'm terrified I will destroy the plaster but I think much worse things happen by not having adequate chlorine readings.