i checked the ph of my soil last night (50% potting mix-25% peat humus- 25% perlite) and about where my roots are it was about5.0. the lower i got into the pot (8 inche pot), the lower my ph dropd, all the way to 3.5 at the very bottom of the pot. I dont know if i should use vinager or bakeing soda to correct the problem (i think bakeing soda cuz its a base), and i dont know how or when i should apply it or how much to apply. Any help with this would be great

Get some ph up and down takes the guess work out.