lol...the t5 I ordered was was priced to sell, I'm only planning on running 2 of the 4 bulbs at a time, to save on power and prevent too much unwanted algae...Hopefully my refugium, stuffed with chaeto, will suck up all the nitrates and help out...The TOM filter is rated at 80 GPH, the JBJ is rated at 40GPH, so it only turns the water over in the tank 13 times an hour...It's been fine so far, cause I have a powerhead for added circulation, but the JBJ filter is adequate...I almost ordered a TOM Deco as my 2nd BECAUSE it had a better filter and light than the JBJ, but all glass won out in the end, especially since I was already planning on upgrrading the light and filter before I bought the first one...lol...But yeah, 78 watts going over 6 gallons, I'll save 2 bulbs as spares...so 13 watts a gallon? Thats on the high end still, but I'm planning on mounting it high on light hangers for easy maintainence access, hopefully I'll be able to dial it in.