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gas eruptions

  1. El Natural
    Hello everyone I have an 18 Gal. Aquarium, set up 2 months ago. With a substrate mix of peat, humus, coconut shells and perlite, about 1” thick, and a top layer of small volcanic gravel, about 1/2” thick. I have some plants, which are doing mostly fine and about 15 small fish, some shrimp and...
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