I've heard of some people blowing more water out of filter sand with a water vac. I'd like to do this since I have a shop vac. so for winter I will remove drain plug and blow out sand (somehow). I still haven't found that one good thread with all my winterizing questions answered. the one people tend to point to is pretty vague and leaves a lot of unknowns for a first season novice.
clean and brush --- Shock -- backwash filter --- drain a few inches past lowest inlet --- add algaecide polyquat ---- cover pool --- remove pump hoses ---- bring pump inside --- remove filter drain and blow out the water --- leave spider between two setting making it inactive which protects the gasket.
Am I missing something?