OK so I have 2-36" T5HO dual lights with one power glo and one marine glo (i realize that theres better out there now and will be getting something better for the next tank) The acan sitting about 3 inches off the ground, Tank is 20" tall. I would say its in a medium flow area. All I have in my tank is a cardinal fish, two peppermint shrimps, one blue knuckle hermit, and 4 blue legged hermits. There are the usual bristle worms every now and again noticed on the rocks, few flatworms, um oh well i have noticed a small crab that hitchhiked, its impossible to get a pic as i dont see him often but what i can describe is its small, i think black and has these fan like antennea off its head. It seems like its staying retracted and not getting food or something, im not sure what necrotic tissue looks like but will google. Thanks for the help!
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