I am about to buy a 4ft 4 tube t5 H.O. for clone / veg, but was wondering if these suckers are any good for flowering using the S.O.G. method. The space would be inches bigger then the unit itself with mylar sides and lights close to tops. I am on my first grow in my new apt. closet and heat is my biggest concern with my hps setup I have now. I was just wondering if it is worthwhile using t5 H.O. 3000k or just stick with 'ol school hps. Good priced units here High Tech Garden Supply