Quote Originally Posted by PoolDoc View Post
Pool Stain Treat is a United Chemical product. Their products notoriously work like black magic: impressive results up front, with a horrible price at the end. They put sodium bromide in almost everything.
Ben,
Pool Stain Treat (and the the Pool Stain Treat spotting bags also) are oxalic acid. 1 lb treats 10k so in her 5k pool this is enough of an overdose to create problems It is a reducing agent just like ascorbic and also creates the same type of chlorine demand! This is one of their products from the short list that is NOT sodium bromide.