Your going to have to change up your feeding, it's not enough. Your also going to add some micro nutrients. What your seeing is micronutrient deficiency, and what looks to me early stages of nitrogen deficiency as well(light coloring of the lower growth shows your plant is pulling nutrients from the leaves to make up for what it is not receiving). Could be the lighting of the picture, but Im pretty sure thats whats going on here. Personally I always add microblast and a little calmag to all feedings to prevent micro issues. Earth Juice should be paying me by now with all the microblast I push for them.
Adding things like phosphorus, nitrogen bat guano earth juice microblast in a random fashion is only going to confuse the plants. If all the fundamentals are right she should be fine with nothing more than tap water, good lighting, air, soil and drainage.
How is the plastic bucket draining? are there holes? how often are you watering? how are you judging when its time to water? what *brand" of soil or peat moss are you using? I would forget nutes for now and figure out which of the fundamentals you are doing wrong. Adding nutes won't fix this.
obviously, all the fundamentals aren't right.
I do so that was my thought haha.