Hi HighDive I guess we will find out about the 3 gallon size being big enough a to grow a plant from scratch. I would think the answer is yes. I have some babies in 3 litter pots for vegging. Soon I am going to put them in 14 liter airpots. That equals 3.1 gallons. I plan on keeping them in the 3.1 pot all the way to the end. The reason I am trying them is last grow my 3.7 gallon airpots had much more unused soil than I expected. My feeling is that the 3.1 gallon pots will do the same job as the larger ones. Even though I am not using them all the way from scratch, I think the results may be the same. Hope I made sense!
Thanks OMM for your thoughts. Do you think it's wise to save money and just get the 3 gal instead of the smaller ones 4in, 1 gal, 2 gal and skip transplanting? When you said that there are much root room left after you harvested from the 3 gal, than I guess having the 3 gal only would be economical (since those air-pots costs adds up fast). What is your veg and flowering time? 2/2 months?
I also wonder what to do with all those FFOF soil after each harvest...