Yes, I agree, Im still running the pump as Im filling now with just main drain going. I have a polaris, you think i should turn it on and let it go around?Might want to run the pump for a while when you have enough water to run again, or if you have main, run pump off main while you are filling to mix. If you have a dolphin throw that in. Water temp likely to be different and will somewhat stratify. Maybe let pump run an hour to two after filled before testing.