i have a 30 gallon tank which i started to add live plants to lately, i understand that 2-3 watts per gallon is best but the highest watt flouresent bulb i can get in 40 watts! if i install incadesent fixtures and use compact flouresent bulb will it work? the compact flouresent bulbs are using 15 watts of power each but they produce 60 watts of light! if i use 2 of these producing a total of 120 watts will it be ok for my 30 gallon (deep) tank??