You could have zoos, shrooms, how about a pagoda cup near the top, green open brain on the sand bed, xenia pom pom, possibly a hammer, some favites would be cool and you could have a sponge of some sort. Basically you can do all softies, and lps but I would put the lps as high as you can get it with the exception of the open brain which should do fine at the sandbed. Also I am sure there is some other lps tha don't require as much light but not real sure which ones.