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rainwater etc submerge them?

April 26, 2017rainwater submerge

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rainwater etc submerge them?

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> 4) Do give the filter arrangement a bunch of thought > re the flow direction… and means of backwashing… > it may well be that a reverse gravity feed, using > graded (larger on the bottom), and some sort of air > and/or water pressurized backwash mechanism will > save you tremendous troubles in future. Much of this > is discussed on WWM’s pond subweb, as well as in > stock works on biological pond construction. This sounds like a good idea, I just had trouble visualizing exactly how such a backwash mechanism would be set up. I will read some more on the forums and see if I can get a better idea. > 5) If possible/practical the biological filter > should be situated to allow water to simply overflow > back down