it was heavily planted, then I fell off on my co2 and ferts and things really thinned out but I have kicked things back in shape. Check out the link in my sig for a few pics. The gro beam is plenty bright, almost too bright in some cases. Its a great fixture I recommend to anyone, it was a little pricey at the time but they have come down some.
Awesome. This helps me out big time. The 500 has the blue lights. I may just try the 400 cuz its only white. I think it's the same emitters as the 500 except that they are 6500k.