i just read about the "capfuls of chemicals" that you are adding somewhat infrequently. you should probably find out what these are right away and post that here. you should not be adding anything (except daily RO topoff water, and twice monthly Saltwater changes) that you are not testing for. as you must know how it is affecting your tank.
Consistency / Stability is very important for these animals. they are designed to live in the oceans where nothing (temp, ph, calcium, alk, salinity etc) varies much and definitly not quickly.