Ive been growing and breeding for over a decade as well. I sort of disagree with a few things but to each his own and ill explain. If you use a small pot I found out you have to water a little more frequently during summer months, winter time i don't see much of a problem. A bigger pot also lets the roots stretch out into a bigger reservoir of available nutrients and water, it also prevents the plant from becoming root bound. Second part i disagree with is several plants in one small area, however this is due to the strains i grow. I grow super autos such as think different and auto ultimate. These plants are huge, the last grow i did with one think different was humongous, it out grew a 3*3 area, ended up with 247g of dry bud. Last part i like to mention is nutes, you can save hundreds if not thousands of dollars making your own. If you make your own you will know you have everything the mj plant needs no more additives such as iron or magnesium. I don't even have to adjust the ph during growth or flower, its all calculated in the mix. I spent $80 on homemade nutes that will last several lifetimes. The ingredients i bought for the home aid stuff is top notch, nothing cheap went into mine. For example over time i found out there are several types of iron chelate just as there are several types of chemicals plants use for nitrogen. I researched, even talked with a few people from texas a&m and bought the stuff that plants easily absorb without problems such as the build up of salts.