Quote Originally Posted by CarlD View Post
Manslick: You drain and refill simultaneously with Pocono's plastic sheet method?
Can you guide the OP in how to do it? I only know the theory, not the practical practice.

Carl
Nah, not intentionally – I close the pool at normal level with a gizmo and the inlets plugged after blowing all the lines and closing all the valves.

During the winter water seeps onto the solid cover. I think birds and chipmunks peck and claw at bugs and poke little holes in it. So I siphon off the seepage plus any rain and bring the level back up with the hose – weather permitting.

So what I do by necessity is very similar to the Poconos method you described, the end result being a water change from bottom to top.

I could see with the right size cover and hosing you could switch the water pretty easily.