undergravel filter

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Well I now own a 90 gal tank............. - Terrariums Forum - GardenWeb
... Sep 6, 06 at 22:08 The thing you mentioned is actually an undergravel filter and is meant for filtering a fish tank by pulling dirty ... have been attached to the upraised openings along the back of the filter. You could leave it in there for drainage but you would ... them is missing its cap. The big advantage of re-using the undergravel filter is it's very light and if properly covered to prevent soil ...
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filters
... make it as a part of filter chamber. And make sure to have a good aeration because plants consume oxygen at night. Undergravel filter this type of biological filter is essentially a larger version of the system used in aquariums. But this one is powered by a submersible pump not like the ordinary undergravel ...
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