Hi GrassCity, I'm constructing an acrylic grow box which will be 30cm x 30cm x 60cm. I plan to grow one short plant at a time and hopefully get enough herb to last me without haven't to pick up. I'm aiming for around 150w for the whole grow box. I figured it would be better to have low watt bulbs but more of them for better light coverage. I've decide i will go with these Grow lights. http://www.ebay.co.uk/itm/5-x-30w-6400k-Day-light-Energy-Saving-CFL-bulb-BC-B22-/190510811883?pt=UK_Baby_Baby_Feeding_Bottle_Warmers_Coolers_LE&hash=item2c5b544aeb All together they will produce 150w, 10,000 lumens which is enough for one plant i hope. If anyone can see a fault in my plan please comment, Feedback would also be lovely! Thanks, Smithers p.s - i forgot to add that i will be growing autoflower as the light specture should be fine for thoughs.