I need some help with my clean up crew. I have two emerald crabs which I got for my bubble algae and its all gone. I also have some small hermit crabs (5-10). I have two nerites, two nassarius, and two big turbo snails. I really want to take to the two big turbo snails out of my tank because they keep knocking off my frags. but I feel like if I take them out my front glass might be a little more covered. if I take them out should I get something different and its in a 55 gallon.