PH,Temp, ORP displayed on controller
Weekly for Alk, Salinity
When I'm bored Phos,Calcium,magn
Test Kits, Tunze for Alk and Cal, Salifert for the rest (which IMO are worthless)
Parameters
Temp 77.5-79.5
PH 7.9-8.2 (maintained by kalk thru reactor)
Alk 9-10 dkh
Calcium 410
Mg 1400
Salinity 1.025 - refractometer