I'm growing in a similar space to yourself ninja1, 60x60x160 with a 250w MH & HPS, I can get 4 6.5l/7.5l pots in my tent, at times things can get a bit cramped and i've thought the same thing about wether i'd be better off doing 2 in 10l pots, but i'm growing primarily for variety as there's so many strains out there i want to try, i've also thought what if i only go for less plants and end up with the same yeild per plant as i did when i had 4 going, i'd feel like i'd have wasted 8-9 weeks so i'm sticking with 4 and possibly taking the hit on yield. If i find a killer strain that i'd be happy to smoke continuously then maybe i'd consider doing less and trying to get them bigger as for now i like having the variety to smoke. I'm nowhere near your level of experience ninja1 but as a noob i'm pulling around the oz. mark on most plants now, my best being a snowstormII which came in @ 35g dry, so i'm sure someone with your experience you can top that easily? I'm also using plant magic old timer nutes as i've tried to go as organic as possible, i'm not completely convinced by these nutes yet but i have nothing else to compare with as i've yet to go down the fully chemical route. My current grow i've not really bothered with the veg nutes, just used a little bit of plant magic catalyst and hesi supervit in veg with some bat guano mixed into the soil and the plants actually look better, i'll use the bloom and molasses in flowering. with regards to your dark period thread below, i've switched light schedules in 1 grow between 20-4,18-6,19-5, without noticing any real difference so sticking with 18-6 currently throughout.