Pot size? (5x5 tent, 4 plants, full canopy, organic grow, fabric pots)

Title says all.
Full canopy will be reached with Bending, Topping and Supercropping.

Thanks in advance!

20 gallon with lots of perlite

Super soil or bottled organic nutes?

And I agree, lots of perlite in soil is always a good thing.

Check out spring pots 15gal +

www.springpots.com

Depends on how long you plan to keep them. From seedling to mature keep upping the pot size as they out grow it, like a growing kid and new pants. Less stressed plants typically grow faster. Transplanting is stressful, so don't top and transplant at the same time to reduce risk of shock.