dear young,

i'm doing my first indoor grow w/blueberries. you may wantto try 48'' fl's. GE makes a daylight bulb that is absolutely fucking outstanding!!!!!!

3050 lumens per bulb, 6500k(the proper color band for veg growth), and only uses 40w!!!! temps are much easier to control with flourecent, as the ballast puts out less heat and the bulb puts out practically none(my plants are touching the bulbs as we speak.)

i was using merc vapor, same color band as yours and had very shitty results. as soon as i switched to the fl's, growth and color improved within one hour!!

an alternative to long fl's is cfls, however, they don't put out as much light as the regular fl's.

ps i am using 4 48'' bulbs for 8 plants. fucking outstanding results!!!!

hope this helps!!

love brooke