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"Sherlock Holmes" because I'm at my witt's end I am starting to believe a poltergeist might be at play. I sure hope the community can help me. First things first before I show my setup diagram. Spa level drop timeframe: 1. Sometimes overnight. 2. Sometimes in a matter of hours. 3. Sometimes...

This is a Pentair valve set before the tab chlorinator to prevent back flow into an intake 3-way valve assembly. I've searched but can only find the round style check valves. This valve is shot and I would like to replace it without replacing the whole unit (with pipe). Thanks in advance

I am literally brand new at this so please bare with me. Using the TFP calc, it states that for my 13K gallon pool, my borates are currently at 15 (desired = 50). My Ph is 7.3, CYA is right at 50, and Chlorine is at 1. I added Bleach per the recommended dose; however it also asks me to add a...

After 16 years at our previous residence we finally bit the bullet and moved to a new house. One of the things that sold me on this place was the gorgeous pool and hot tub that came with it. The previous owner told me all about its features, Pentair this and Pentair that, but they are all Greek...