judyk
Member
Does anyone know if sea urchins make a popping noise? I have had live rock in my 55 since Oct. I found a mantis shrimp immediatly and got it out. But I still keep hearing popping off and on. By the time I get to the tank it stops. I've looked day and night with a flashlight and cannot find another one but I do have an urchin that came with the rock. This is driving me nuts!