Ok so i picked up some of scotts moisture control potiing soil, i put my seeds to germinate last night im thinking about what size pots i can use i was using gallons of milk as pots because they fit 6 perfectly in my grow area, is this good for 2-3ft plants i cant have em too tall so im hooing i can use those. I know yall said about the jugs being see through and light hitting the roots but they fit so perfectly that the light hits the plants and dirt question being are the milk jugs good enough?