Hi, am very new to the hobby. I have a biocube 29, 2 OC clowns and a wheeler goby and a clean up crew. I went to the LFS and they said I was able to have these in my tank they have been in my tank for about a week. They seem to have these a couple clear tubes sticking out of them can someone tell me what they are? Is this normal should I be worried?
Thank You,
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