02-04-2012, 09:38 AM
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I'm with BrokenRules...
I think you may (like most of us!) be guilty of over thinking filtration.
If you already have a deep sand bed, lots of plants and a good, well maintained canister filter, you won't gain much, if anything, with what your thinking of doing.
If you're possessed with the idea, consider an AquaClear type HOB (or similar) filter filled with bio-media. As I stated previously in this thread, I have one filled with Matrix. The beauty of a dedicated bio-filter w/inlet pre-filter is that the bio-media can remain undisturbed nearly indefinitely. Much like the deep sand bed, this non-disturbance results in the best eco-system development and stability.
Btw, Did you know that the Aquaripure filter is filled totally with sponge material? Sponge material in combination with lower flow rates (the Aquapure operates at just a trickle) is an excellent platform for beneficial bacteria colonies.
Food for thought.