I measured my salinity today using my red sea refractometer (i calibrate with rodi) and it says 1.025. then I measured with the tool that looks like a thermometer and floats in the water, it gave me 1.028.. could my salinity be this high all along which is why my softies are very slow growers and my lps have died? Keep in mind, the floating salinity checker is like 5 years old.. what do i do?