Last fall pool pump stopped working and instead of spending the money then i waited until a few days ago. I know i should not have done that Pool is green Over the winter i have had to drain out a lot of water due to rain and the cyanuric acid is very low. About 10. As i try to get this green cleared up i am going to have to backwash the sand filter a lot. Is it worth it to add acid before or wait until i have the water clear again?[h=1][/h]