Had someone call me asking for advice about their pool. Pool has apparently been sitting unused for two years aince home was purchased. The homeowner recently drained the pool and attempted to remove all the algae from the pool walls. It is a gunite pool by the way. Well, he said that some of the algae is literally in the walls of the pool and he hasn't been able to remove it. He also mentioned calcium?? stains on the pool walls. I asked how old the pool was and he said it was probably installed in 2007 as he bought the house out of a foreclosure. One of the those recent McMansions built.
Any suggestions on how to get rid of the remaining algae other than filling the pool up, adding shock and algacide and hoping it doesn't spread over the winter? Any thoughts as well on possible calcium deposits on the walls? I don't have much experience with gunite pools, most I see have liners.
Thanks for your suggestions.