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RE: Plenum method
> From: Cliff Mason <lcmason at ici_net>
> Subject: Plenum method
> I will be setting up a 90g tank soon and I was wondering if anyone has
> applied the plenum filtration method used in mini-reef tanks to a
> freshwater system
I have this in my 180g plant tank. The goal in reef systems is to provide
an anoxic layer under the substrate for denitrifying bacteria.
I can't tell that it does anything. My nitrate levels are pretty much
zero on all my tanks, including this one (but I have light fish loads).
You might think about it for heavy fish loads, but I don't think it's
worth the trouble. I'm making designs for a 720g tank and it won't
have this plenum.
I did do some other "clever" things including establishing a nutrient
drip-system that injects veeeeerrrrrrrry slowly under the substrate
(one of my motivations for the plenum). I really like the result on
that-- dosing is uniform under the substrate leaving a relatively
nutrient poor water column.
charleyb at cytomation_com