Lime quick ?

I have a mag or cal def but I don't have any calmag, I do have some dolomite lime and i wanted to mix that with my water for watering how much do you think i should use for every gallon of water?

Dolomitic lime is relatively insoluble in water and can take several months before it begins to take effect in the soil profile. Use of products such as "SoluCal" is preferred as it requires as little as two weeks.