Polyp extension is thought of as a positive in the hobby but it is not always the case and sometimes it means something is wrong.I had a similar issue with my refractometer not reading correctly. Found my levels were at 1.027 and polyp extension on my acropora especially was better than ever. Think you may be on to something! Now just getting your fish used to it. Mine were not fans of the higher salinity, which is how I figured out it was high in the first place.
Same here except I have like 5 bottles. I tried Salifert and it seemed to be right in the middle with one of my others..Right there with you. Three different brands of calibration fluid, each differ by 1+ PPT. Tested with manual refractometer, ice cap digital, and GHL conductivity probe.
I've had the same issue and found same solution. I use the Tropic Marin Hydrometer to make a calibration standard that I use for everything. I had some creeping salinity issues that caused problems early on and I've been chasing a solution ever since. My standard testing method now involves a refractometer and a Pinpoint salinity monitor....both calibrated to hydrometer verified standard.I've got all manor of salinity checkers: old school swing arm, several refractometers, Milwaukee Digital refractometer, Pinpoint Salinity Monitor, Apex salinity probe. They are all somewhat accurate, but they never match! I find on average refractometers, Milwaukee included, measure about .001 high. The only thing I trust now is something I found years ago, a Tropic Marin Precision Hydrometer. It's dead accurate and with the temp adjustment tables, I use it to measure twice a week without having to adjust water temp. I even use it to calibrate my Apex Probe now since it's far easier and less of a pain than the calibration fluids. Using the TMPH, I maintain at 1.0264 (+/- 0.0002).
I see from the ICP test that you posted a reading of 0 for Iodine. Is this normal for you? Another thread you posted attributed low Iodine to tissue recession. Anything adverse happening in your tank when this ICP test was taken?
I recently bought an IceCap tester and ICP test confirmed my salinity was 1.022. (ICP said raise salinity lol ..) Milwaukee would read 1.024 no matter what. From 1.022-1.022. Maybe the lens goes bad over time?Adam I had some issue with the Milwaukee tester . I e mailed the company and they some of there distilled water and there own salinity product and it was still off. I went back to a regular refractometer with there test solution . Can you test your water this way and give a comparison. Thanks
They are just inaccurate from my experience. Mine was consistent, but consistently 0.002 off.I recently bought an IceCap tester and ICP test confirmed my salinity was 1.022. (ICP said raise salinity lol ..) Milwaukee would read 1.024 no matter what. From 1.022-1.022. Maybe the lens goes bad over time?