Hey everyone. I am having issues with my apex salinity probe. It seems I have to turn upside down daily to release any bubbles bubbles it goes back up to 34 but within half hour drops to 28 and seems to keep dropping. I got my hanna and that said 1.026, my refractometer says 1.027 and the instant ocean hydrometer says 1.026. What is going on with the Apex Salinity probe. Why does it constantly drop. Do orp, ph have anything to do with it.