Not sure if this is right forum, but feel free to move it if not.
So I was using refractometer which was calibrated at first at everything was fine. Then I noticed that some of my corals were not fully opening and some sps started browning and STN. I checked by water and everything was fine.
Alk 8.6
CA: 445
MG: 1230 little low but OK
PO4: 0.23
NO3: 5
PH: 8-8.3
Salinity 1.026
Unfortunately by refractometer was off and when re-calibrated it was showing 1.022 , since then I had raised my salinity back to 1.026.
But questions remains how to really tell what measuring device to use. My Refractometer is calibrated with Pinpoint solution and well as my Pinpoint Salinity Monitor which both showing about same now. I recently got Hanna Salinity checker which calibrated to Hanna solution at 35ppt but showing my tank at 1.024. Is this just their accuracy error or is pinpoint wrong ?
Which one to trust more ? Is the calibration solution correct ? or Just pick one and go with ?
I would rather stay within 1.025 - 1.026
So I was using refractometer which was calibrated at first at everything was fine. Then I noticed that some of my corals were not fully opening and some sps started browning and STN. I checked by water and everything was fine.
Alk 8.6
CA: 445
MG: 1230 little low but OK
PO4: 0.23
NO3: 5
PH: 8-8.3
Salinity 1.026
Unfortunately by refractometer was off and when re-calibrated it was showing 1.022 , since then I had raised my salinity back to 1.026.
But questions remains how to really tell what measuring device to use. My Refractometer is calibrated with Pinpoint solution and well as my Pinpoint Salinity Monitor which both showing about same now. I recently got Hanna Salinity checker which calibrated to Hanna solution at 35ppt but showing my tank at 1.024. Is this just their accuracy error or is pinpoint wrong ?
Which one to trust more ? Is the calibration solution correct ? or Just pick one and go with ?
I would rather stay within 1.025 - 1.026