I know you love your plants and you want the best for them. This is definitely the best for them and they will thank you with fat full colas. CL.OK 4 gallons and that is enough anymore will be a waist. She is full. I did that too 2 plants and they are all wet I can see where it is coming out the bottom of the pots. Thats 8 gallons of PB. I have not even feed the small plant yet.