I am 5 months into ownership of my first pool. As I said in a previous thread the house/pool we purchased was a foreclosure so the pool had been negelected and plaster is stained. The plaster is still in good shape so I would like to get rid of the stains and forego a re-plaster for at least a year or two.
My first choice was to drain and acid wash but in my earlier thread it was suggested that I maintain higher FC levels and brush to try to lighten the stains first. Now I'm wondering since no one is using the pool if I can bring the FC up to shock levels to see if it will lighten them? would this be productive at all or do more harm than good?
Also, if I do end up draining the pool. should I try a chlorine wash before doing the acid? If so, What is the percentage of the liquid chlorine used for this?