Aside from salinity, how often do you test for other things? How many of you don't test anything except salinity? What kinds of things do you test for regularly?
Live monitoring: temperature and pH.
1x week: salinity during WC
1x month: Alk, No3
6x year: Ca
4x year: Mg, Sr, I2, K, Fe
Sometimes more, whenever a particular parameter needs attention.
Worth mentioning I use dosing pumps for a while and deviations in NO3, Alk, Ca and Mg are minimal.
It reallycomes down to how longive had my tanks for, my new build i test alk almost everyday because im contantly adding corals and tuning my dosing pumps. Calc and p04 3 times a week and mag/n03 once a week. On my other tanks i havnt tested in 2 months lol