so i ran 5 gallon pots last time. just used an a and b fert and no microes. i imagine my harvest may have been minimun 20% more yeild. oh well it was my first grow. my next grow i am thinking of going with larger pots, 7.5 gallon. will i see much of a difference in my yeild? and i do plan on using microes this time. anyone use this size or bigger?