Originally Posted by statler&waldorf
Looking at the PAR data for the 48" you would have ~ 30 at 24 inches, so you would still be in low light. You should be alright without co2.
That sounds fairly positive. Looking at the PAR chart that Hoppy has out there, I was a little nervous. Was thinking about going down to the Marineland double-bright, but the reviews on that thing don't look too great so I wanted to stick with the Fugeray.
If I have any issues, maybe I'll just play with the photoperiod a tad and see if I see desired results... maybe?