Instant Ocean Reef Crystals Salt Mix

Instant Ocean Reef Crystals is an enriched marine salt made specifically for reef aquariums, with extra calcium, trace elements, and vitamins to support vibrant coral growth. It dissolves quickly, stays clear, and gives your reef a strong, consistent foundation. Build your reef with corals and saltwater supplies.

Why This Salt

• Enriched with extra calcium and trace elements for coral growth
• Includes vitamins to support a thriving reef
• Dissolves fast and stays clear
• A trusted reef formula used by hobbyists for decades
• Consistent, reef-ready results every mix

How to Mix

• Mix with RO or RO/DI water, not tap water, for best results
• Add salt to water slowly with a powerhead running, never add water to salt
• Mix and aerate until fully dissolved and clear, usually a few hours to overnight
• Check salinity with a refractometer and target about 1.025 for reef tanks

Choose Your Size

Specifications

Pair It With

• Simpler fish-only tank? Use Instant Ocean Sea Salt
• Measure salinity with a refractometer
• Test and dose with alkalinity and calcium kits
• Browse more salt mixes and corals

Frequently Asked Questions

How is Reef Crystals different from regular Sea Salt?
Reef Crystals is enriched with extra calcium, trace elements, and vitamins for coral growth, while regular Sea Salt is a balanced everyday marine salt.

Which size should I buy?
The 50 gallon suits small tanks and water changes, while the 200 gallon box is the best value for larger systems.

What water should I use?
Use RO or RO/DI water for the cleanest, most consistent mix.