Are 250Watt MHs "bright" enough for a 31" depth tank?
I'm about to order a 44"L X 15"D X 31"H and want to make sure I will still have enough light penetration with 250Watt Iwasaki bulbs (plan to run a pair of these 250Watts over the tank). Do I need to/should I go up to a 400Watt?