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I have what looks like plaster in the pool/spa water , seems worse in the spa. The pool and spa were acid washed before it was closed due to black algae in some spots of both the pool and the spa. Both also had white stuff coming out the plaster walls (plaster?) The acid wash got rid of the...

Opened a pool that hadn't been open in 2 years, ph test showed yellow on my taylor 2006 test kit. It is a vinyl liner pool 18x35 around 25k gallons. There is a white cloudy like film on top of the water, to my understanding I have sort of balanced the water, the ph is at 7.2, free chlorine 4...

Not sure if i is posting in the right section,I have some stains in my pool and spa, the pool/spa looks like it has dirt settled at the bottom but either vacuuming or brushing doesn't take it off. I tried a black algae treatment, followed the instructions but the stains still persist. There is...