Shrimp under trachy

jasonrusso

Non-member
I caught my pistol shrimp tunneling under my trachy today. I suspected this was happening but I never saw it. Sometimes he puts sand on the trachy which makes it blow up like a ball.

There really isn't much I can do, but is this necessarily harmful to the trachy? The trachy and goby literally have 8 other caves (they are all connected, little engineers). This is just one of them.
 
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