Reef Dilution Calculator

Calculate dilution ratios for reef tank parameters and water changes

Calculate water change volumes to adjust tank parameters, or see what parameter changes result from a planned water change.

Tank Setup

Units

Tank Volume (Liters)

Enter your total system volume including sump

Parameter Values

Parameter to Adjust

Current Level Salinity (sg)

Current level in your tank

Target Level Salinity (sg)

Desired level after water change

New Water Salinity (sg)

Parameter level in your new saltwater

Calculation Mode

Choose what you want to calculate

Calculate Required Volume

I know my target level, show me the water change volume needed

Show Resulting Level

I know my water change volume, show me the resulting parameter level

Water Change Volume

Enter your planned water change volume

Volume (Liters)

Percentage of Tank

Results

Caution

1.027sg

BEFORE

1.027 sg

AFTER

1.027 sg

Very small parameter change - effect may be negligible

Large salinity difference - mix water gradually and monitor livestock

Parameter change: reduction of 0.000 sg (0.0%)

Water change: 20.0% of tank volume