I bought a PM2 and an extra salinity, Temp probe so I can monitor my salt mixes in my 20 G brute container. During my water change today I put the extra probes in my main tank and notice a huge difference in my salinity. For weeks I've been testing the tank but I never thought to check the salinity with my refractometer because I was relying so heavy on my apex probe to be accurate. I'm glad I finally figured it out but I lost a few corals because of the tanks high salt levels. Has anyone else notice any similar issues with there probes ?
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