Let's play "Guess the missing nutrient"!
I just realized I said I had 130w T5 for 55 gal. My bad...
I have standard compact fluorescents. Is approx 2 watt/gal of CF still too much light? I've cut my photo period back to 8 hours, but feel like 10 hours of full 130 watt CF lighting should be fine for an Excel/EI dosed tank.