Glad to hear it. Blennys, snails, crabs, etc all knock over stuff occasionally. My Maroon occasionally remodels his quarter of the tank. So the Feather has had a little more trauma than usual. He'll probably get over it unless someone actually bit him. I would stay away from any SPS given your lighting. Toadstools are nice, easy and pretty although they can be trying. They get limp for no reason and then look good again a couple hours later. Plus they do slough, and shutdown completely for several days at a time. That can be stressful on the human involved. If you want to expand beyond softies in that tank I'd maybe try a hammer coral next. They are pretty, tolerant of lower lighting (although mine love MH) and are a generally easy coral. You might also want to consider mushrooms or hairy mushrooms.