On Mon, 31 Dec 2007 17:41:14 CST, Galen Hekhuis
wrote:

Being as how I am digging a (small) pond right now,
I would like to avoid such a mistake, and the time for a bottom drain
is now when the pond is being constructed, but I can't see the
advantage in having one. What am I missing?

Bottom drains allow the leaves, trash and quite a bit of fish waste to
escape the pond into a settlement barrel (in my case) or filter system
where the undesirables can be removed or flushed more easily than
vacuuming from the bottom of the pond, or even less desirable, allowed
to decay or build up on the bottom.

If you want to get into super water quality for show fish, I'd
recommend something like this, with air.
http://tinyurl.com/2a4wjq
--
Hal Middle Georgia, Zone 8
http://tinyurl.com/2fxzcb