Then 1 ( or both) of Your calibration fluids is not good. Just decide Yourself which one You are going to use as a reference.
Or get a chep scale for 1/100 gram and make Your own fluid.
Or get a chep scale for 1/100 gram and make Your own fluid.
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I'm running into the same problems as everyone else here, I even tried calibrating the hanna to tank temp water and don't see an improvement. My refractometer reads at 1.026, my hanna reads at 1.021 - pretty big difference imo. I'm sure tank temp has something to do with this, and the hanna is telling me the tank is a good 8 degrees warmer than my other thermometers claim. Not really sure who to trust at this point....
What is you Magnesium level at? Mag levels play a huge part in refractometer readings. Mag of 1400+ will give you a higher reading in a refractometer.I was playing around with this again today and they are still about 2 ppt different from each other with the refractometer reading higher. Do I trust the refractometer more than the Hanna?
BRS.......The product is really only intended for testing fresh mixed saltwater and not for testing tank water due to contaminates can interfere with the reading. Along with that if you don't let it settle you can get inaccurate results and ambient room temperature is recommended for the fluid. If you have any further questions please let us know.
What is you Magnesium level at? Mag levels play a huge part in refractometer readings. Mag of 1400+ will give you a higher reading in a refractometer.
My ditched my refractometer for this hanna tool. My issue is the temperature aspect. My hanna says my tank water temp is 76.6. Inkbird says my temp is 77.6 degrees. . My cheap plastic (Aquaneat) digital temp guage with a probe says 78.8
Ummm what the heck is going on here?! All temps were taken at the exact same location and depth in my tank. What do I believe here?
Average the three and that is good to go. We are only trying for consistency and trends. Reef tanks thrive in a certain range. The best thing to do is keep doing the same thing as long as it works and try your best to run things in the middle. Due to the fact that our tools, gauges, and test kits are hobby grade none of them are really correct.My ditched my refractometer for this hanna tool. My issue is the temperature aspect. My hanna says my tank water temp is 76.6. Inkbird says my temp is 77.6 degrees. . My cheap plastic (Aquaneat) digital temp guage with a probe says 78.8
Ummm what the heck is going on here?! All temps were taken at the exact same location and depth in my tank. What do I believe here?
Great advice, thanks.Average the three and that is good to go. We are only trying for consistency and trends. Reef tanks thrive in a certain range. The best thing to do is keep doing the same thing as long as it works and try your best to run things in the middle. Due to the fact that our tools, gauges, and test kits are hobby grade none of them are really correct.
or simply pick one that you like and stick with it. The temp probe in the Hanna Salinity probe is primarily for calibrating the results.Great advice, thanks.
or simply pick one that you like and stick with it. The temp probe in the Hanna Salinity probe is primarily for calibrating the results.
Like @lppyroy said, you're really interested in consistency more than what the true, precise temperature is. What you're really asking is how do you check the calibration of a temperature probe.
Assuming they have a linear response...quite easy to do, either use a cup of ice with water, should read 32f or boiling distilled water.
I calibrate my Hanna to tank temp also. Haven’t checked in awhile but my Hanna would be 1.026 and refractometer was 1.028. I use the Hanna only but mix and keep tank at 1.024. Either way I’m safe.I'm running into the same problems as everyone else here, I even tried calibrating the hanna to tank temp water and don't see an improvement. My refractometer reads at 1.026, my hanna reads at 1.021 - pretty big difference imo. I'm sure tank temp has something to do with this, and the hanna is telling me the tank is a good 8 degrees warmer than my other thermometers claim. Not really sure who to trust at this point....