We have a small lap pool indoors. We keep a cover on it because we have issues with humidity. We have a dehumidifier inside the pool room. Our water is a community well and is super high in alkaline and very hard. We have a water softener for the water inside the house but not for the pool. We noticed a bunch of scale that we have to vacuum out. Today I was testing the pool and I noticed that the top of the cover has a huge growth of white stuff that looks like hard water or scale or salts or I don't know what? Does anyone have any suggestions on what it could be and how to get rid of it? Thank you so much you guys are awesome