As some of you saw I recently acquired a sea hare for an algea problem. Well he ventured into a Seio pump and was stuck to it. When I tried to get him off the pump he started emitting "purple poop" from his backside. DOes anyone know about this stuff? Is that his blood or toxins? Its a 140 gallon (total) tank with a fuge (macro). I have started running cardon immediately. Any ideas?