Would this work for PH control?

Would a product like this work without adverse affects on your plant or soil to adjust the ph of tap water?
http://www.cheappetstore.com/Fish-Aquariums/Aquarium-Water-Care/pH-Conditioners/PROPER-PH-65-21425/

I would not recommend it for Cannabis. It is a series of sodium salts. cn

http://cms.marsfishcare.com/files/msds/proper_ph_65_122309.pdf