Is there a limit to the shrimp I can keep in a 75 gal? I have a cleaner now. I have been thinking of adding a blood red, because I like the color and would like to have another guy in there cleaning. Recently I have been thinking of adding a peppermint shrimp to help keep my Aptasia under control. Is this too much? Will the peppermint get a long with a cleaner shrimp/blood red?