Out of curiosity, how long do you veg for and how much light do you have to justify a 25 gallon pot indoors?
For our fastest growing, largest producing strain, as not all strains would benefit from such a large container. Mr Nice Super Silver Haze is a representation of a strain that grows fast, produces probably about as much weed vs veg time as any other strain.
We start the grow from seedling/clone with either a 1000w Hortilux HPS, Gavita 1700e, or 1150w Gavita DE. Seedlings Clones are started in 32oz Uline Deli containers , and Promix BX until they need transplant. Then theyre put into 5 gallon grow bags with Promix BX, We veg with 24/7 light period. We veg for 60 days, and also bend the plants over to grow like a bush. Also dont top them, or fiddle alot with the growing tip, unless I want to slow growth. Mucking with the growing tip constantly can also stall vertical growth like topping, but you keep the growing tip.
We also rely on the stretch of the SSH, and want to keep the growing tip. SSH can stretch 2x-6x depending on pheno.
When we get ready to flower, we put the 5g grow bag down into the 20g-30g grow bag/Rubbermaid container, and cut the bag from the 5g container with scissors. Rough up the roots a bit. Water with about 2g-2.5g of water/food. At their fastest growing Ill have to give them 4g-6g of water every 3.5 days at 82f, and 5 fans. 3 HID flowering lights.
By the time the grow is over the plant will have used all the root space possible in the container. If it was in a Rubbermaid type container, and 20g-30g container can easily be root bound.
Not all strains will grow like this tough, and even 10 gallons is probably good for maximum production, unless they veg for 4 months, and I aint doin that on a consistent basis.
32oz from 80 days veg, and 30 gallons of soil is possible from 1 plant. You have to have alot of ventilation and 78f-82f temps. 72f-74f lights out. Fans are also on 24/7. 1 plant can easily take up a 5 x 5 area.
This one side branch weighed 56 grams dry.