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Hi, I'm trying to understand why controlling pH has become so difficult since switching from a stabilized granular chlorine to liquid chlorine. By keeping TA religiously at around 80 I barely needed a coffee cup of acid every three or four weeks with granular chlorine, but since switching to...

20,000 Gal pool, glass media filter, fibre glass surface, using liquid chlorine. I had kept my TA at above 100 when I had a concrete surface. Since it was refurbished to fibre glass, the guy who did told me to not worry about TA any longer because of the fibre glass coating, which seemed odd...

Hi... I treated copper stains with oxalic acid in my fiber glass pool and it worked great except I ended up with a lot of crystal flakes in the DE filter. Does anyone know if it may have been a reaction with the DE powder or something else? I recently switched to a sand filter with glass...