Re: Antifreeze, Yes or No
That is true. No need for antifreeze as long as water has been blown out and there is room for ice expansion for whatever is left in the pipes. By this I mean low spots in the piping where water could settle. Pipes break because ice has no where to go. If you have a low spot where remaining water can settle and fill the pipe then there may be a problem. Usually on returns this isn't a problem but could be with skimmers where the suction pipe is deep. I just blow my returns and cap them and I try and suck all the water out of the skimmer pipe but fill that line with AF anyhow since my skimmer line is still above the frost line. I block my skimmer opening with a foam block because I don't drop my water level that much. Then use a shop-vac to suck water out of the skimmer box and line. Works better than blowing. Then plug with a gizmo and pour AF into the pump strainer basket and fill the line. I then pack the skimmer box with foam chunks because it will fill with water and freeze. I use a closed cell foam, same stuff pool noodles and some kinds of packing foam. Won't shred like styrofoam and won't saturate with water.
As for Polyquat? Don't use it so can't advise.
Hope this helps.
Al
16'x32' oval 22K gal IG vinyl pool; ; Hayward S244T sand filter; Hayward superpump 1 HP pump; hrs; K-2006; PF:5.5
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