Originally Posted by tekkguy
Yes, exactly. The spec offers very little mechanical filtration. So if the biologically filtered water was driving a sponge filter, there would be more mechanical filtration and probably much happier shrimp.
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The spec has that huge sponge in the filter compartment. I wouldn't call it "very little". The biomedia it comes with its plenty for shrimp (the huge sponge also holds beneficial bacteria). The only concern is aeration. This can easily be improved by aiming the filter outflow nozzle up and keeping the water level slightly lower to increase surface agitation. An airstone would also work just fine.
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