I would put atleast 1 more power head in there water movement can stimulate coral growth as they like the movement and it brings more nutrients to them. I have a 55g right now with 5 power heads 3 are on constently they are lower flow and have ocilaters so they sweep back and forth, two are on at opisit times on a timers corallife timer switch. I have no cyano or red slime algae, I did have a very small outbreak of cyano when I started up but that is all I had. The green hair algae was my problem and that I believe was because of a bad timer. It was a digital timer the programming was right but it would turn off when it was suposto turn on and turn on when it was suposto turn off. Fired it in the trash should have broght it back and got my money back ho well.
Bill