thats a pretty small cab so i simple PC fan will take out all your heat my cab is 32x16x16 so its almost the same size all i use is a PC fan with a 150watt hps bulb, dont scrog LST instead it does the samething in a way and less stress to your plants.

this is what she looks like with about 18-19 days left

http://boards.cannabis.com/attachmen...3&d=1159411662