We have used a shop vac, a muck vac and also the valve that we have. But
truthfully the easiest and fastest way to clean out the muck on the bottom is
to use our irragation pump. It has a filter on the end of the hose, so it
sucks up the muck on the bottom great, and we have several hoses going in all
directions so lots of the yard gets water that way.
Jan
"Our Pond" Page
http://hometown.aol.com/pinkpggy/index.html