- Sku: 80280
- Vendor: Fritz
Fritz RPM Reef Pro Mix Salt
Fritz RPM (Reef Pro Mix) is a professional reef salt formulated by marine scientists to include all the major and minor elements of natural seawater. It is made in Fritz’s own facility in small, quality-controlled batches rather than outsourced, so every bag mixes fast, dissolves fully, and gives your reef a consistent, reef-ready foundation. Build your reef with corals and saltwater supplies.
Why This Salt
- All major and minor elements of natural seawater
- Made in-house in small, quality-controlled batches, not outsourced
- Mixes fast and clear and dissolves completely
- Balanced for everything from fish-only to full reef systems
- A professional-grade salt at a reef-club price
Target Parameters
| Salinity | 35 ppt (1.0264 specific gravity) |
| Calcium | 400 to 450 ppm |
| Alkalinity | 8.0 to 9.0 dKH |
| Magnesium | 1300 to 1400 ppm |
| Strontium | 9 ppm |
| Potassium | 400 ppm |
Parameters reflect Fritz quality-control pass ranges with the median targeted. Your source water, especially its alkalinity, can affect the final mix.
How to Mix
- Mix with RO or RO/DI water for the most consistent results
- Add salt to water slowly with a powerhead running, never water to salt
- Mix and aerate until fully dissolved and clear
- Confirm salinity with a refractometer and target about 1.0264 (35 ppt) for reef tanks
Choose Your Size
| Size | Makes / Best For |
|---|---|
| 14 lb Bag | About 50 gallons, nano and small tanks |
| 35 lb Bag | About 120 gallons, mid-size tanks |
| 48 lb Bucket | About 175 gallons, resealable bucket |
| 55 lb Box | About 200 gallons, best value |
| 55 lb Box - 4 Bag | About 200 gallons in four sealed bags for freshness |
Specifications
| Brand | Fritz |
| Type | Balanced reef salt mix |
| Best for | Fish-only, FOWLR, and reef tanks |
| Sizes | 14 lb, 35 lb, 48 lb, 55 lb |
| Origin | Made in USA |
Pair It With
- Running SPS or dosing heavily? Try Fritz RPM High Alkalinity
- Confirm salinity with a refractometer and check calcium with the Fritz Calcium Test Kit
- Browse more salt mixes and corals
Frequently Asked Questions
What does it mix to?
At 1.0264 specific gravity it targets calcium 400 to 450 ppm, alkalinity 8.0 to 9.0 dKH, and magnesium 1300 to 1400 ppm.
Is it good for a reef tank?
Yes. It is balanced at natural seawater levels for fish-only, FOWLR, and reef systems alike.
Which size should I buy?
Smaller bags suit nano and mid-size tanks, while the 55 lb box is the best value for larger or busier systems.
Have a question?
Fritz RPM Reef Pro Mix Salt
