Ill give this a shotDon't try to inject kalk - it is a pita and if you miss the nem shriks up and vanishes.
Mix up kalk with fresh water (ior use f aiptasia) so it is the consistency of tooth paste. Turn off your pumps. Using a syringe with no needle, smother the aips with the paste, covering them completely. Wait 45 minutes and then turn your pumps on again. Leave the kalk in place, Most of it should stay, and if any or all of it gets blown out into the tank no worries.