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My pool has 2 skimmers that go down to a single line going into he Jandy Valve. Is it safe to block the flow of one of the skimmer inlets while having the manual vaccum hose in the other inlet? It seems I do not get really good suction on the vaccum if the other skimmer inlet is free flowing...

I had recently noticed that my CYA was low and yesterday put some in a sock and had it suspended in the skimmer box, BUT I forgot to keep the pump running and it was sitting in the skimmer overnight for several hours. I knowit is acidic, but how much, if any damage, could this have caused? I...

THis is our first year as pool owners. I had posted several months ago about successfully completing a SLAM, and then posted a update thinking the algae came back, but then convincing myself it was just dirt in the liner seam. Finally two weeks ago, I came to the hard realization that it was...

Being a person that is very inquisitive and wanting to know as much as I can about pool chemistry: Is it possible to PASS an OCLT and have 0 CC and STILL have an alage problem?

This is our 1st winter with a pool and I have diligently montiored and tried to keep all of my levels with the Ideal Range, and definitely(Recommended Range) in my Pool Math App, but am perplexed at how much the cold water impacts this. Current levels: FC: 5.2 CYA: 70 Ph: 7.6 TA: 60 CH: 160...

I have developed the habit of double checking levels when I see a change to remove as many variables for testing errors and before I add any chemicals. It seems that when I test my water in the AM the Ph will consistently be at 7.4 but when I test it in the evening the Ph is 7.8. It is like...

My wife and I joined this forum during the recent build of our new pool and have been lurking for a few months now. I have read many of the threads about if it is algae or dirt, SLAM dont SLAM, but felt it was time to reach out. We have been dealing with what I think is dead algae, but the...