Is a 3 gallon pot enough for a big yield and heavy roots. Or should I get a 5 gallon pot for big yield and roots? Also when it's time for feeding, I have 6 plants Can a Milk container gallon be the source for my 6 plants starting out. I know they take more water as they grow but I'll wait to ask until I get to that stage.
Indoors you won't be vegging for long, so there is not much difference between a 3 and a 10 gallon bucket. For outside, the bigger the better, ground is best.