I have a 80g tank and want to go for a planted one. I am planning to use phillips CFL for the plants. As per the thumb rule of 2W-3W / gallon, I would need appr. 80*3W = 240W. The CFLs are 6500K.
Which one is better
1) 3*23W (each o/p = 80W appr.)
2) Or should I go for 1*100W...