A+B mystery solution seems to be great at being an emergency fertilizer.

Now I have absolutely no idea what is supposed to be in there (the label says nothing) but I have used it on my jalapeños because they were somewhat deprived of nutrients. My jalapeños, padrón peppers and Hungarian wax have responded nicely (before and after pictures of my jalapenos). My ghost pepper however did not like this dose at all and has gotten some minor nutrient burn. I will definitely be doing things differently there.

I have since added actual fertilizer but that seems to take it's time before it even begins to act.