So my new hippo tang took a skydive from my reef 4ft onto the floor. Found him barely breathing. Put him back in cleaned him off and put him facing the return to get water moving across his gills. I rested him in my palm and swam him around the tank to help. When i let go he kinda swam but seemed very disorientated. So I found a vegtable egg crate that floats put him in it with some garlic nori. He's getting good flow. I doubt the other tankmates are the culprits. Two small fiji chromis and a mate pair of percs who reside on the other side of the tank. Anyways sucks he's only two weeks old, he was eating but always shy. Would come out then hide. Sad, sucks. He's the yellow belly kind, so very cool fish. He was going to be my last edition to my reef fish wise. I figured 5 fish in a 75g is enough. Its a shallow cube, no top. I just ordered BRS clear mesh and trying to find 3/4 inch rimless clips. Hope it works. I'll update.