Something's wrong with my tank. It,s cloudy. Tablets I tried didn't work. My invertebraes are not taking it well. My chocolate chip Starfish fell off the wall and curled up. I picked him up and put him up on top of something higher in the tank, but I noticed he had some little brown spots all over him that aren't usually there. The spots are fadind now and he appears to be doing better, but he looks like he's got tiny pin-holes all over his back as if something was eating away at it. Also the Flame Scallop was all sucked in for a little while but he also looks better. There's also a dead hermit crab who's no longer in his shell. My wrasse looks a little dark like he's stressed. Everyone else seems fine. Please help. Would appreciate any advice.