Radium????
I used to use 2x250 mh. I got tired of the heat so I went to t5's. I have a tech light 6x 54watt. This is over a 120. The "guy" at my local "shop" said it would be enough. But it ends up being around 3 wpg. I have been having alge issues. And very little coralin. My crocca is doing ok...