Im going to be building a grow box that is roughly 2x2x4 and I was wondering what a cheap, and effective way to light it would be. thanks
Several CFLs or a small HPS 150w-250w,..... 6-8 23w cfls will do, also you can mix your spectrum with the cfls.
He is right! load as many CFL's as you possibly can...... Keeps heat down and you can postion them all over the box
i ran 6 42w cfl's in a box thats ~2x3x4, if i were to do it again id get a 250w hps and an air cooled hood, leave the ballast outside your box and itll run cooler and work better.