Where to start?

[Jakebear]

I know it's a bit late for this thread but for the future for those who need to change the water and can't or do not feel comfortable with draining ----

Here is the answer to your prayers.

Silage Tube ---- Yep, those big tubes that farmers blow cattle feed into for storage and feeding in the winter. You can buy them at most farm supply stores and they are available in various sizes -- 6, 8, 10, feet diameter and bigger they come in up to 8mil thick --- the way I figure it you could close one end --- lay it across the water of your pool and fill it with water. A 6' diameter 20' long tube should hold 565 cubic feet (3.1416 X Radius Squared X Length) which is equal to 4237 gallons (7.5 gal per cubic foot).

Water seeks its own level so the excess will go out the overflow or over the edge if you get a tanker to fill it with a big hose.

BTW a 8' X 5000 feet tube costs $175 but you could probably buy a hunk from a farmer somewhere by the foot.