bone meal is one but its slow release i beleive . Also depends on the store i have noticed some stores dont carry what others do. You want the middle number of the NPK ratio to be the highest for flowering and the first one nitrogen to be lowest in flowering the lower the better. Home depot carries a 8-14-9 liquid fert for african violets. They also like slightly acidic too and its been working fine for me as a last resort because i beleive the 8 is too high. But thats my uneducated guess. I posed this exact question on here and didnt get many responses on it so really cant for sure if it is or not.

I use Bloodmeal for vegging with a little of the african viloet fert too for the mirco nutrients but if i had a choice and money right now i would visit a hydro store or order it online and get the good stuff that fox farms makes.