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I read that the engineer goby likes to burrow a lot and may topple rock structures, but if all of my rocks are directly on the sand, so is this really a problem?
Sorry I meant to say directly on the glass! Brain fartYes, that's a problem. Rocks would need to be directly on the glass, not on the sand.
Engineer gobies will dig tunnels under the rocks, causing a live rock avalanche.
Yes this is a real problem, I have one about 4 inches long. Dig under everything and rocks do settle and fall. Currently I have an acrylic tank so no risk of crack. When I upgrade to glass, I will place rocks directly on glass then add sand around them. Great fish but burrow a lotI read that the engineer goby likes to burrow a lot and may topple rock structures, but if all of my rocks are directly on the sand, so is this really a problem?