m0useanswered grow question 9 months ago The plants seem healthy now, what ever you have been using it seems to do the trick.
There is a brand called "RAW NPK" nutrients. They are pricey for what they are, marketed to weed growers.
Most if not all fertilizers are made up of some of the same things. only so many compounds that can be used and break down into plant available forms.
Your plants have a a bit still to go before they are ready for harvest, they just enter flowering.