You sir, are correct. You do NOT want a flowering fert that is high in Nitrogen. That is better suited for veg. What you DO want for flowering is something strong in Phosphorus, like the 4-12-4 that you have. Just ease the plants into the nutes slowly, and you'll be fine.I thought in flowering you wanted lower N and Higher P for sure I had been using 12-4-8 for veg and got the 4-12-4 for flowering I hope I didn't get that shit wrong cause my shit would be all fucked up.