Here is a small grow box I just decided to throw together. Its a little less than 2'X2'X1.5. I plan on using 2 or 3 CFLs. I will probly just vent the box without fans. I want to grow LST or SCROG and will be using some bagseed. The plants will have 12'' of grow space from the top of the (3) pots. When should I go to 12/12 for that little space? yeild?