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DIY bead filter
Anybody built one? Not a lot of sites still working that talk about
them, in fact I only found two, this one is pretty old: http://tinyurl.com/24egq I like this idea because it has a removable lid, making it easier to clean if it were needed. One question that arises about this drawing is why have a waste dump and a bottom drain? Couldn't one simply use the bottom drain to flush the filter beads and dump waste? The Larry Lunsford DIY bead filter has the advantage of being shorter and a bit easier to hide in my situation, but seems a more difficult to clean since it is on the side instead of resting on the bottom of the barrel. http://pw1.netcom.com/~larry_l/diy_bead.htm I'm not familiar with these, but Ingrid says they have been known to go anaerobic. I suppose that means they begin to produce hydrogen sulfide, or other nasty stuff. I don't doubt this has been a problem and I think any filter could if proper water circulation was denied the aerobic bacteria. I wonder about the complex designs of some beads and think perhaps the simple bead would work better with less water flow, unless churned inside the barrel or subjected to greater water flow or turbulence from air, like the Nexus filter uses. I'm considering building one and place it between my present filter barrels and the plant pond, which I need to rework in the next couple years, before it falls apart. Anyone with experience could be helpful and ideas are welcome. Regards, Hal |
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