Pardon me for interrupting you dirt haulers, but you are growing in dirt, aren't you? And some pretty good dirt, too, in most cases. So why are you feeding with every watering? I've never used Foxfarm, but I'd say that is too much. Even at 1/4 strength, that is too often to feed.
If you're feeding every time, how is it different from hydro?
In soil, let the plants roots search for food and water, and that will increase the root mass, and the plant will be bigger, and so will the buds.
And you are watering too often too. No matter what your pot size, and plant size, you should let the entire pot dry out before adding more. The only way to know when that time is, is to withhold all water until the leaves start to wilt. Water then and the leaves will perk right back up. Note the time required, and you have your watering timing.
HTH