I make my kalk paste just thick enough that its not really a paste, a thick slurry more or less. Just thinned out enough that I can suck it up in an Aiptasia-X applicator, and I use that to pour it on.

Kalk is heavy enough that it holds its form, and falls from the syringe. I used it to kill all my clove polyps … it burns the coral, and then the kalk dissolves over the next few days … by the time it has dissolved, the kalk has burnt away all the tissue on the coral.