Actually whilst you are there I have noticed what good healthy plants you have for the pot size, have u experimented with larger pots and found no benefit? ta
Well my opinion on needing bigger pots for bigger plants/yield is probably gonna be a little controversial to some but I've found that if you look after your plants properly (proper PH, good water, no defs) then your plant will perform to the best of it's ability regardless of pot size.
If you don't look after your plants properly then the plant above ground will grow a hell of a lot slower, smaller and stunted than it should considering the growth rate of it's roots. The roots will out grow the pot before the visible plant does in that situation.
If you look after your plants then the visible plant above ground will grow far, far faster and bigger than it's roots will in the same time frame. Meaning that it's time to flip long before the roots out grow the pot.
Those plants are in 10L airpots so for starters root circling is eliminated outright, it just doesn't happen. Then you would have to grow plants for ages and ages in order for them to become rootbound in airpots, logically for that to happen you would have to fill in all the holes with root tips in order to block the roots which is near on impossible (I'd like to see somebody try it) considering the space home growers have.
The airpot website has a video of a tree that has been in a 40-50L airpot for 5 years and it's no where near bound or even struggling for that matter.
That big plant is drinking quite a lot of water to be honest, she gets 4-5L every 3 days to herself and it's starting to look like she'll need it every other day soon, there's shitloads of room left in the 10L pot for more roots and I'm quite confident I could fill a whole 1m square tent with her alone and have it finish at 6feet tall by 1m wide without having to repot her. I may well have to water her every day to do so but it I could do it easy.
The 'Skunk #1' pics I posted the other day where about 34" from the top of the pot when I chopped em and pulled 4oz each in 6L wilma pots of coco under a 400w, if I could be bothered to water them every day (or even twice a day) I could have got the same size plants/yield in 4L of coco with a little longer veg time judging by the root ball at harvest.
If anybody really thinks they need more than 10L of pot size then they need re asses the situation and their approach in my eyes, root circling in regular pots can be an issue but you still need to be growing fecking trees for that to happen if you're doing it right.
The 6 foot cheeses I lost where in 15L regular pots of coco and where just ridiculous to work with, grew stupid fast and big in no time.
My 'Smelly Fingerez' clone mother has been in a 1L soil airpot for about 7 months and she's still growing strong.