I want to grow big plants indoors under 5k lights. If I veg my plants for 4 months in soil, how many gallons is enough? Is bigger better? I've been thinking about using 50+ gallons of soil per plant transplanted straight from cutting. Will my plant grow faster and bigger in the 50 gallon than if I were to use a 20 gallon pot? I may even jump up to 100 gallon pots if plants will grow faster in them. If so by using huge pots, soil growth can be comparable to coco growth rates, correct me if I'm wrong.