Don't laugh but I actually have a medicine grinder...a mortar (had to google that)...it was my grandparent's lol. I have done this a couple times actually. I grind up a few tablespoons worth of the garden lime and the take out a smaller amount of the really ground out powdery lime. Actually I just went a looked at my notes; I used 1 tsp for 2 liters of water. (a gallon is 4 liters) with 1 ml bud candy. This was 5 days ago and I really headed the problem off here.... and I am comparing this to a previous batch, same soil, but used the calmag plus twice 1 ml to 2 liters of water. Like I said my red spots in the veins problem is not continuing it appears, and I can for sure say my banana boat looking leaves have flatted back out(yeah!).
EDIT: OH YEAH! Make sure to level out the PH like you normally would. And I leave this mixture to sit over night to make sure the PH is gonna stick. Lime as we all know will neutralize PH in soil, but it will add about 1.5 points to your waters PH from my experiences. ...it will take more PH down to get to 7 than it normally will take with straight water.