UG Filters was Thanks for: Re: Colisa Sota (really offtopic) [OT]

["William Vannerson" <William_Vannerson at ama-assn_org>]

>>And I'm one of the folks that has had good success with under gravel filters,,, Guess from the current popular press I'm one  of the lucky ones ;-)<<

Actually, the Shedd Aquarium ran an experiment comparing various filtration methods, UG, sponge, outside power, & inside box (I think that's all).  Their results showed that UG was the most effective filtration.  Of course there are trade offs, as with most things in life. ;-)


Bill Vannerson
McHenry, IL
http://ourworld.compuserve.com/homepages/william_vannerson

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