ive always used 2 part cal & alk supplement but as my life gets busier i am trying to cut down on maintenance. ideally i would add a one part supplement to my auto top off basin and let it dose for me. auto dosers seem to be too pricy especially for a 2 part one. i am only keeping some lps and soft corals no sps or clams. anyone no of a decent enough 1 part calcium supplement? to my understanding of the science behind it i dont know if it can be done.