Ok, sounds like you’re missing one of the Fox Farm Trio, do you have Tiger Bloom?
Start slowly, don’t go anywhere near the PPM’s on the Fox Farm feeding schedule, but make sure to flush at the intervals they say to. Fox Farm nutrients work, but I never got the greatest results from them, and I frequently ran into issues. There are several other choices. Many folks here use Jack’s. I’ve been using Advanced Nutrients for years now, but I’m trying out Earth Dust by the Green Sunshine Company on half of the plants in my current grow.
For now, I’d give them Big Bloom and Grow Big. You can go a little heavier with the Big Bloom, but go very lightly with the Grow Big, and increase in very small amounts when needed.
If you want to see how my plants are doing in the Earth Dust, here’s a link to my journal.