the thing about baking soda is it has lots of salts which are bad for the plant

idk about the other, but to raise the ph in soil hydrated lime is the best and a bag is about $2
texas grass Reviewed by texas grass on . noob ph question hey guys, gotta question here.. so if I wanted to raise ph levels of my soil.. could i use some ph/alkalinity up for spas. The ingredient is "sodium hydrogen carbonate" Could i just mix this into my water in very small amounts to make the soil less acidic.. i think another name they use for it is "soda ash" Rating: 5