Lockout due to low ph a little help please

Ok I am in soil and I am pretty sure I have a mag def due to lockout soil ph is 5.3 so I know I need to raise it but my question is what do I add to raise soil ph? Also if I can do it without watering it into the soil I would prefer that method as I just finished watering and feeding. I can provide pics etc if needed. Peace!

top soil off with lime.

gonna have to water it down

Ok how much lime would hate to cause more problems.

The best way to stable PH is by adding 1 ounce of Dolomite Lime per 1 gallon of planting soil.
Can anyone confirm this please?