I've had good luck with my Pond Mini Vac -- and found I can use
pantyhose knee-highs instead of the filter bag they sell. Of course,
mine have been small ponds, first 450 gallons and now 1400 gallons. My
mini vac was about $20 from Drs. Foster & Smith
http://www.drsfostersmith.com

Gabrielle

Hank wrote:

I've seen pond vacs advertised that use a garden hose to create a
vacuum to clean bottom of pond.Has anyone had any experience positive
or negative. Are their any other vacs available for $150 or less
Thanks Hank