i put this in the new hobbyist section because i made a new hobbyist mistake i should have known better. yesterday i added a 29 gallon fuge to my 50 gallon tank, but only filled the fuge halfway. i mixed my saltwater and started the fuge after only a couple of hours. needless to say, the water in the fuge was cold and it dropped the temp in my tank about 4 degrees from 82 to 78. now all my corals are closed, my mushrooms are shriveled up, and 2 fish have died. my other green chromis that hasnt died looks terrible, breathing very fast and wiggling around. even my turbo snail looks like its dying. all other fish are swimming very sluggishly. I tested my water and salinity is at 33 ppt, Ammonia at 0, nitrite 0, nitrate 20ppm. what could possibly be causing all this??? this sucks i was so stupid to do that and now it seems like my whole system is going down the drain.