Yea, it is in my tank, and like I said, it was a saver from the LFS! They had it in their reef, and it looked great when they got it, but they let it get bad. It's actually coming back, but as far as my params are, ammo=0, trites=0, trates=~10, SG=1.026. Have had no trouble with anything except for a little hair algea bloom that came from a bulb change from 14K to 10K.