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Any idea what this white stuff could be? Found it near a return bubbler on sun shelf. It dissolves if you rub it between your fingers. I was thinking maybe calcium, but my water chemistry seems to be in reccomended ranges. Using a PH meter for PH.

I have an Intellicenter and Pentair UltraTemp 140 heat pump with cooling function. With the cooling function enabled it requires a set point for cooling in both pool and spa mode. Because of the spread required between the heat and cool set points, I am not able to bring the spa up to it’s max...

Could DPD powder cause these spots on table? Not sure if I spilt some, but don’t know what else it could be. There is a potted orchid overhanging the spots. If DPD, is there anything that can be done to fix it?

The box on my heater has two tip-n-tell indicators to show if it was tipped (see photos). The guy delivering it had it close to horizontal on the dolly trying to pull it through the grass. The indicator now shows it was tipped. Do you think there’s anything to be worried about?

Hi, I love this forum. A lot of wonderfully helpful and inteligent people here. I went down the CheemGeek rabbit hole. Very impressive how much thought and research he put in. Anyway, currently building a pool and spa. I think my relevent equipment details are in my signature, but if not let...