Perfect Your Saltwater Mix
Calculate precise salt amounts for water changes, compare major brands, and create custom recipes with batch tracking. Take the guesswork out of water changes.
Precision Water Changes
Enter your target salinity, water volume, and salt brand. Get the exact amount of salt you need—in grams or cups. No more mixing until "it looks right."
- Calculate by volume (gallons/liters) or weight
- Account for brand-specific densities
- Adjust for current vs. target salinity
- Output in grams, cups, or tablespoons
Compare Salt Brands
Different salt brands have different chemistries. Compare their baseline parameters to choose the right one for your tank.
| Brand | Alkalinity (dKH) | Calcium (ppm) | Magnesium (ppm) |
|---|---|---|---|
| Instant Ocean | 8.3 | 400 | 1280 |
| Red Sea Salt | 8.0 | 430 | 1310 |
| Reef Crystals | 10.0 | 490 | 1340 |
| Tropic Marin Pro | 7.0 | 400 | 1300 |
| Fritz RPM | 8.5 | 450 | 1350 |
| Brightwell Aquatics | 9.0 | 440 | 1320 |
* Values are typical and may vary between batches. Always test your mixed water.
Create Custom Recipes
Go beyond the calculator. Create custom salt mix recipes with specific supplements, track batches with lot numbers, and test your mixes through multiple phases.
- Define your base salt and supplements
- Track individual batches with lot numbers
- Test at initial, mid-point, and final phases
- Version control for recipe adjustments
Perfect Your Water Change Process
Calculate, compare, and create custom salt recipes for consistent results.