everythings great in my tank right now, but i read about all the testing needed. my question is what else should i test for? as of now, i test ph, salinity, nitrate, nitrite, phosphate, calcium, and alkalinity. what else is there? i mainly intend to just keep softies. right now i have mushrooms and frogspawn. both are doing well. i just want to stay on top of things so help me out i know there's some smart people on here.