I have a few rtgs in my tank 4rtg and 2silvers.. They are fighing non stop.. I have all of it in my 522. They are about all 14inches now.. Triedc wave maker dosen't work.. Dun ask me to separate coz i dun have ant more extra tank for them and dum ask me to sell coz i dun intend too.. Just want to stop it fighing.. The sligtly bigger one is always picking on two my my rtgs.. Help me out..