Dont me to be rude but I must.:D
I am planning on upgrading to the 660 as I have the 430 right now. What is going to be best.
running 2 6' VHO super actnics?
Or
running 4 3' VHO super actnics?
Replacing the bulbs is cheaper with the 3' setup. But what is going to give me the best actnic look.