Salinity Calculators
Wet Pets Salinity Calculator
Estimate how much marine salt mix to add, or calculate a water change plan when salinity needs to be lowered.
Use SG or PPT. RODI freshwater may be entered as 1.000 SG or 0 PPT.
Input Type:
Use the actual water volume being adjusted.
For RODI water in SG mode, enter 1.0. For PPT , enter 0.
Typical reef systems are around 35 PPT or 1.026 SG.
For lowering salinity, this is usually freshwater or lower-salinity saltwater. In PPT mode, RODI is 0.
Salt to Add (pounds) 0.00 lb
Salt to Add (US cups) 0.0 US cups
Water to Remove (gallons) 0.0 gal
Water Change Percentage (%) 0%
This calculator provides an estimate. Add salt slowly, allow water to fully mix and circulate, and verify salinity with a properly calibrated meter or refractometer before making additional adjustments.
Need help dialing in salinity? Bring a water sample to Wet Pets Aquatics and we can help verify your readings.