Most of the bottom part is activated charcoal and gravel. It was going to be a terrarium at first. When I move it around, some bubbles surface. Do I have to remove some of the decaying material or something?

by Max-Flores

1 Comment

  1. BitchBass

    Biofilm is normal and part of it. But you need to add live aquatic plants. A vital key element in an ecosphere.

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