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I'm a novice pool owner. I have an inground 20,000g with a sand filter and I use chlorine. I took the mesh cover off 6 days ago and was greeted by a green swamp. I ran the filter continuously and brought the chemicals within parameters. I also added algaecide and shocked it several times. I...

I have a Tagelus sand filter with a Pentair Hi-Flow valve. I followed the manual's instructions precisely to winterize the unit. This invlovled depressing the spring and rotating the valve handle to the 'WINTERIZE' position on a rib. It states that this will keep pressure off of the main seal...