My new refractometer says that 35ppm equals 1.026 specific gravity. I have seen 1.025 specific gravity and 35ppm salinity recommended. Now that I can measure and fine tune salinity, which should it be, 1.025 or 35ppm?
Also, I have one 55 gallon tank that is at 1.029. A one gallon water change reduces the specific gravity about .001. How often should I do the water changes to reduce the salinity?
Also, I have one 55 gallon tank that is at 1.029. A one gallon water change reduces the specific gravity about .001. How often should I do the water changes to reduce the salinity?