HELP!!!!!! I have had a Green Mandarin for about 3-4 months He has been eating fine from day one and after a week he readily took Mysis shrimp, I added A (Blue Dot Sea Hare), 4 more Astrea snails 8 total now and a Brittle Seastar, I acclimated them all for 2 hours and their all looking fine, but my Green Mandarin seems like it went Blind and lets me touch him pick him up I put him in a small container I use for acclimation and threw in some Mysis shrimp he did not touch them!!!! normally he goes nuts over them!!!! I have put him in the Refugium for now so I can keep an eye on him and find him if he dies! could the slug have poisoned him?? he was fine until I put these guys in and all the other fish are fine, or am I missing something a illness? I am at a loss here how a healthy fish could change so fast I change the water 10% a week the PH is 8,4 all the other stuff I test for are undetectable ammonia 0, nitrate 0, nitrite 0, the Phosphates 0, Calcium is 550ppm temp is 79F a bit warm but I can't afford a chiller and my Room A/C keeps it there at 79F also its a 75 Gal Cornerflo tank with a 20 Gal Sump/Refugium the Skimmer is in 24/7, I hope someone has a idea he was fine until I woke from a nap today he was all over the tank skimming the rocks for pods nonstop now he just sits there occasionally finding a corner and swimming into it.