Wattage question

[barbuto]

I currently have two 13 watt fluorescent CFLs in my hood. Does that mean i have 26 watts or only 13 all together?

 

[Blown 346]

You have 26 all together with the bulbs. Then you have to divide 26 by your tank size to get how many watts per gallon you have for the tank.

 

[jpappy789]

Don't worry too much about wpg though...