I have a t5 flowering set up for tops and sides. I grew my seven girls, 3' high, 2'-3' wide. My Top 4' t5 lights[x4] and my 4' side lighting:x4 on each side. I used the standard reflectors so i could concentrate my light at a downward 35 degree angle and utilize full lumen efficiency[5,000]. It worked awesome and i only have a $50 electric bill every month. I vegged for 2 months, and now im on my last 2 weeks of flower. I use 1000 watt hps now.