Okay, check it out: that 3 number ratio, known as the NPK ratio, shows the ratio of nitrogen, phosphorous, and potassium in that order. So the African violet is 7% nitrogen, 7% phosphorus, and 7% potassium-- equal parts of each one.
When growing Mary j, you need certain nutrients at certain stages. For veg, or the first stage where the plant is simply growing bigger, you want more nitrogen. So make sure the first number is the highest. For flower, you want mostly phosphorous, and some potassium. So in the second stage, when the plant is growing buds, you want the middle number to be the highest.
You cod use the African violet, but honestly miracle grow has other ones (like the one you have) but they have different numbers. Get one that has a really high 1st number (high in nitrogen) and then get the bloom formula, its in a blue box (not purple like the African violet) and has a high second number, for phosphorous.
H
You can use the stuff you have, but you'll have better results with two different ones, and they are only $5.60 a piece ($11.00 total) and will last you a while. I don't mind typing this stuff out, but if you want to grow dank then you need to research some of this basic stuff. You'll thank yourself later, I promise.