Clicking Noise In My Tank???
I've been hearing mysterious clicking noises in my reef tank for about 6 months now, but cannot find the source. I know it could be a mantis or pistol shrimp, but have found no evidence of them at all. Nothing has died except one hermit, so I thought it wouldn't be a shrimp. I do have a mithrax crab and another hermit in the tank currently; could these be the source of the clicks. The clicks occur in irregular bursts generally at nigh; sometimes 1 click and others 2,3,4 clicks. I have ruled out equipment and so for the life of me do not know what these stupid clicks are! Could anybody help? If it is a mantis or pistol how do I look out for it? What should I do to find the source of the clicks!