Although I prefer T-5 type floros to CFL's in a small veg cab almost any floro will do as well or better than MH.
Even a 250w MH will give off multiple times the heat that double that wattage in any floro type will give.

As for odor,of course vegging plants are not as stinky as flowering but they do give off a "green" smell once they get any size to them.
It is not a strong odor though and can easily be covered with any odor neutralising spray or similar item without having to use a charcoal filter.

Hope this helps bud.
Darkone7 Reviewed by Darkone7 on . Builing Veg Box, (Only CFLs) vs. (MH + CFLs) Hi all, I have a closet that I am putting a vegetative box and a flowering box in. The closet is 5' x 4.5' x 9'. I am putting a 2' x 2' x 4' veg box and a 4.5' x 2' x 6' flowering box in the closet. I started building the veg box last night and went to look at CFLs for the grow. I have a 400W HPS that I am going to use for the flower box along with some extra CFLs for good measure. I was originally planning to use only CFLs for the veg box, but after looking around I am thinking maybe I should Rating: 5