Moved from here.

Thank you all for sharing your knowledge, you do a service to this great community.
Many years later but just in case someone like me is trying to do a partial pool drain, a have to say this technique works. I set my filter in backwash mode, bought a threaded hose connector in Lowe's for $1 to firmly attach my vacuum hose to the suction hole in one skimmer (see link below), then I filled my vacuum hose with water and send one end of the hose to the bottom of the pool using a vacuum head with a pole as weight. I have two skimmers, so I put a tennis ball in my other skimmer to block the suction on that one (I guess I could have used another vacuum hose in my second skimmer but I didn't have an extra hose). While I waited for the pool to drain, I even vacuumed the bottom of the pool since as I mentioned I had the vacuum head attached, win-winDoes this actually work..? I'm assuming the suction would keep the hose from being disconnected. That along with using a rope to keep the hose off the floor sounds like a much easier way than using my transfer pump for 12 hours.
Using hoses to siphon is very slow, but also a great technique.
Thank you all for sharing your knowledge, you do a service to this great community.
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