Lately I have been really getting into breeding fish. Any advise on the easiest way on rearing fry? Right no I have a 29 with a powerhead w/ sponge that has convicts red zebras and flamebacks. Also I wonder if my breeding tank should have no gravel? I also have a 125 gal I now I need to separate my breeding pairs so they ave their privacy I have a pair of red devils the male is 10" and the female is like 6" or so and all he dose is kick her @ss. The other pair are jack dempseys the male is about 8" and the female is like 2" or 3" smaller. water temp is high and water is crystal clear do I need to divide the tank in half? and if so haw do i do it.