Ok I tried the vitamin C and the Chlorine tablet on several spots around the pool and neither one removed or even lightened the stains in my pool. So yesterday I picked up some Muratic Acid and tried that on the first step of my spa. Stains came right out. So Acid Wash it is.
I know the basic procedure and have a basic idea of the supplies I need but just wanted to get some pointers from the pros here.
I will have about 5 days to get this done. How long does it take one of those sump-pumps to drain a 15K Gallon pool?