Wonder twin power, activate! Shape of Hemp!

[pumpkinpatch1]

joker was going to buy a nice plastic container that looked like pot shaped. But joker wasn't sure if it's ok to use plastic.. (it was green)

if yes. Then how would joker know how many gallons of water can go inside the bucket. (joker is bad at math) how does joker know how many gallons of water he has in the plastic bucket/pot. it should fit in the grow box... it's just a bit bigger and wider in height.