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I’ve had great help from this forum in the past, and want to ask for advice again. My pump stopped running. No humming, no sound at all. I confirmed with a multimeter that I have 240V running to the pump, the capacitor is good, and the wiring looks ok too. If it is jammed or bearings are bad, I...

I have several of these big white hard (not brushable) marks on my pool floor. I assume they are calcium nodules since my CH has been very low (160) for too long. I will increase my CH to 350 using a red bag of Joe Melt. If these are indeed calcium nodules, should I just sand the nodules down...