Still good, but you can increase yeild and potency considerably with added nutes. $50 worth of chems now could net you ounces of extra weed at the end of harvest. Even without using the canna products, you should get between 10-20% more weight just using a potash containing nutrient(eg; DM potash+) throughout flowering. I use roughly $200 worth of nutrients per crop. The more you put in (without over-fertilization) while they're growing the more you will get out of them. Every gardener does it different and there are a huge amount of products out there. My plants are 4 weeks into flower and they already stink and have nice crystally heads.