I drip kalk nightly.
2 teaspoons of kalk mix dripped from a 1 gallon milk jug of RO/DI water each night. dripped at about 1 drop per second through knotted airline tubing siphoned from the milkjug. oldschool cheap bastard style
120 gallon setup. Works well, but it's a real pain to do EVERY night. contemplating an aquamedic reefdoser 3 or 4 channel peristaltic pump after x-mas. dose 3 part alkalinity/calcium/magnesium, AND top off!