I'd get a small canister for each tank...a small Eheim Ecco or its analog would work. The tubes can easily be adapted to lilly pipes.
Has anyone tried using leaf litter as a substrate for blackworms? I'm guessing it would be a nice way to keep them fed, similar to brown paper that some
I don't know who or what is responsible for the death of your fish, but I would like to see CSI: AC on TV...
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Both fish and plants need water changes to be healthy. Even if you have your fish and plants in balance where ammonia and nitrites are not an issue,