what does this promote, or why is this beneficial? I just want a understanding of why, my understanding is I could veg for 4 weeks in 1 gals and switch them to 5 gals starting flower? or do I need to use 1 gals for 2 weeks then switch to 5 gals for rest of life time?I would skip the 3 gallon. Run longer in the 1 gallon then go to 5 gallon.