agreed with everyone as i had mine in similar pots, one way of looking at it is imaginin the canopy of leaves of your plant is the same size as ur root complex so if you dont think the canopy would fit inside the pot then put it in a bigger one.... this is why i love the ground as the roots will always find sumwhere to go,

i wouldnt worry too much bout the yellowing and the leaves dropping off it happens to mine and it happens to all plants under the sun its natural stage of a plants grwoth to get rid of the lower leaves that dnt get much light to put more energy into taking light in through the top leaves which get loads.

some people worry too much and think that cuz there plant has got a bit of yellow or summet isnt quite right that its the end of the world.... chill out, roll a blunt, wathc them grow, let them do there ting, they will be fine unless there is sumthing seriously rong but then u will be able to tell...:jointsmile::jointsmile: