don't use every watering. i fed my plants once a week. try it twice a week.
1/2 strength the first feeding, and wait a week, just in case....
use them, and see what happens.
the NPK ratio should be higher in the N for veg.
anyways, the bloom formula looks good. i used a cheap-o 15-30-15 and it worked fine.
also, remember that when you mix it with water, the PH of the mix will change, so you have to adjust it...
good luck!