Pot Size?

can 2 gallon pot grow a 3ft plant or should i repot??

Yeah it can.....but it might not yield as well as a bigger pot...but it will work

Short answer, yes. Long answer, give it a bigger pot if you want the plant to get bigger. Keep it in the 2 gallon pot if you intentionally want to restrict how big the plant can get. For example if there's a chance the plant will grow into the light after you run out of vertical space you may want to keep it in the smaller pot.

i use 2 gallon pots, plants getting no taller than about 30 inches(so far)
but that's the size i like