i like this thread! i grew 5 Lowyder #2 plants in a custom made computer box like this too, just last year i think the thread is still there. anyways i wouldnt expect 20g from just one plant if your growing soil. Lowryder has a nice center cola but thats about it, maybe 14g you'll get per plant.

for a light id also recommend getting a hps bulb for that to induce the best flowering. like so: SH Hydroponics, Inc. > Sun System® HPS 150 Grow Light Fixture*
mine was 75w but i really could have used a 150w.

this strain grows real fast its a joy to watch, it shows preflowers around week 3 or 4 so keep your eye out for males. mine did well with scotts fertilizer and flush them before harvest. its a good smoke almost a psychedelic high, not very high in thc content but they will look nice and smell almost like cut grass. good luck ill be checking this thread every now and then!