On Mon, 7 Jan 2008 21:32:11 CST, ~ jan wrote:

Definitely adequate.... but you'd never talk me into using sand & gravel.
Screen door stuff works very, very, well.... and is light weight when
eventually you'll need to clean it. ~ jan

Cleaning it what I like most about it. I took the air blower from the
hot tub and blow air bubbles into the 1&1/4" tube that forms a network
of 1/4" holes under the stones at the bottom of the barrel. Another
amazement in my sheltered life to see all the crap that blows to the
top of the filter to be drained into a nearby flower bed. My sand it
crushed oyster shell. Never have to worry about pH in that pond
again.
--
Hal Middle Georgia, Zone 8
http://tinyurl.com/2fxzcb