Went to one of the best greenhouses in the area and bought a bag of potash. All the fertilizers I mentioned are mixed in the soil of the garden pots. Will use the potash according to the directions on the bag next time watering is needed.
Use great care with potash. Not sure what formulation you have, but a l-i-t-t-l-e goes a LONG way!
Not even sure if that’s the prob. Di is going the complete opposite way. Not being sure what’s wrong, you might use a couple plants as guinea pigs. Try one each way—fert/no fert for a couple of days and see which one perks up or not.
Good luck!