On Tue, 1 Jan 2008 01:18:23 CST, "Reel McKoi"
wrote:

How did you keep leaves and frogs away from the
drains intake?

I don't try, they get sucked into the prefilter, If a frog were to get
sucked in, it could crawl out of the prefilter, I net out any goldfish with
no damage. In the koi ponds not a problem, fish too big, and a bullfrog
would be too big to fit between lid and liner. What kind of bottom drain
does Margaret have, how big is the line feeding it? Sound like a design
problem if things are clogging it. ~ jan
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Zone 7a, SE Washington State
Ponds: www.jjspond.us