Ive had really good varieties in a super rich organic compost in a big ass pot. All I did was water them with plain tap water every few days or so and the plants gave up some of the frostiest tastiest smelliest stoniest buds I ever grown. That being said...these days I grow in 2 and 3 gallon fabric pots of coco coir using a simple full profile mineral powder fertilizer and a special organic foliar Thats all I use. Basically kelp, humic acid, soy plant' and yucca. Spray em down in veg every week. Gets them nice and short and bushy. Throw them into flower. And wait for the frost giants to appear.