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I'm hoping for some clarification on pH testing using the Taylor K-1000 kit that came with my TF-100 kit. I know this question is going to be hard to explain but here is the question: am I trying to match the color or the intensity of the color? It looks like the top 3 blocks on the tester are...

I have an algae problem and a party in one week. I just discovered this forum and Pool School so I'm trying to get up to speed very rapidly. I am planning to begin Slamming my pool this afternoon and my question is this: CYA is currently below recommended level. Should I leave it there for...