I spent a quarter studying marine biology in Australia and studied the symbiotic relationship between gobies and pistol shrimp (the whole trip was the main motivation for starting the tank) but I didn't realize that you could buy the pair when I started it. I want to give it a try, but I...
I've got a 55g tank up and running with cured live rock, fish and corals (zoos, frogspawn, GSP, and xenia). So I started it with crushed coral substrate, but now I want to switch to sand. If I do this will the cycling of the sand shock my livestock?
