My name is Jason and I'm new here at TFP. I have just installed my new 33' round above ground pool and is still being filled, with my water source it will take a few days. Anyway I have learned a lot about maintaining my new pool the past several months but I do have a question at this time. Since it is taking so long to fill my pool should I add chlorine as it is filling? Seems to me the water will get stagnant and possibly grow algae if not treated. I have about 1 1/2' of water now and I have not balanced or treated any water yet.