Are you in soil? Nutes or organic? Sorry, haven't been all the way thru your thread yet. If its organic, put 2 teaspoons of dolomite lime in a gallon of room temp water, shake or mix it good and water with it. It will neutralize your soil. Lemon juice, yes, is a good ph down. your soil should stay around 7. If organic, you should do the lime and wait for it to self correct. Organic is pretty forgiving compared to feeding packaged nutrients.