A 2" or 2.5" dia. PVC siphon will work, and very inexpensive. Bring
the pipe outlet several feet below the pond level to get a fast flow.
The warmer the water the faster the flow.

A garden hose and cap to get the siphon going will help.
jay

Or a shop vac, if you can make a good connection.

What's the time period? I've used 1/2" tubing to drain down my lily pond of
1,000 just a few inches and it took hours, I don't think a garden hose
would make much of a dent, that a good rain couldn't refill. ~ jan


~Power to the Porg, Flow On!~