Originally Posted by Cody
And I don't see where you get 2WPG with two lights and two tanks. Would you keep switching them over between the two tanks?
No.... sorry for your misunderstanding.
I've got two 10 gallon tanks and one flourescent 15W tube hood and one screw in type incandescent hood. Since the incandescent hood has lights in it right now that are no good for plants i was switching back and forth every day using just the flourescent hood so they each had 8 hours of flourescent light or so per day.
Now i bought 2 of these color max compact flourescent screw in bulbs for the incandescent hood at 10 watts each for a total of 20 watts over a 10 gallon = 2wpg.
So one tank will be keeping the 15w flourescent tube hood and one will have the new 2 10w screw ins- no more switching back and forth.