the female sailfins seem to work males hardly touched it and they did better with red cyano bacteria, they loved that stuff, sea hare, more snails and keep dosing every month with marine S.A.T. made by tlc. Other wise a good size refugium in sump with tons of chaeto for all nutrients will be used up by macro algae so it won't grow in display tank. Good luck i ran out of marine SAT and haven't ordered anymore online and algae is slowling coming back in 125 gallon, and this tanks is sumpless gonna have to put one in soon for big tank.