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I'm SLAMing my pool. Although it was crystal clear, I noticed my salt cell required higher percentage than normal for this time of year. Ran OCLT @ CYA: ~55. 6.0ppm down to 3.5ppm the next morining. Not good. Started SLAM, target 24ppm. I use the TF-100 test kit. Question: How accurate...

I have been using TF100 for two years. Recently, my Calcium Hardness has crept up to 430ppm. I took a sample to two different Leslies and Warehouse Pool Supply stores (four stores total). All have given me values in the mid 200's. Confused, I ordered fresh TF100 test chemicals, followed the...

Hi! First post. Be kind :-D I have a Hayward Pro Logic PL-PS-8 system. Spa with spillover to the pool. One pump (dual speed Hayward NorthStar SP4015x202. Two auto valves which turn fine (one on supply, one on return). My issue is that when I cycle my Pro Logic to Spillover mode, the...