View on LOZ Suggested Retail: $92.69. Instant Ocean Reef Crystals Reef Salt For 160 Gallons, Enriched Formulation For aquariums. Contains essential ocean reef elements in concentrations greater than those found in natural sea water. Recommended specific gravity range – 1.020-1.026 at 77ᵒ F | Note – 1.4 lbs. of Reef Crystals is formulated to create 5 gallons of saltwater at a specific gravity of 1.021. Our marine salt will typically set the pH of a tank between 8.0 and 8.3 while it produces between 7 and 10 dKH. Encourages stony coral and coralline algae growth | Product has a chelator in it that removes the metals from solution. Provides vital nutrients. Neutralizes traces of heavy metals found in tap water. It is not generally recommended to use Reef Crystals in freshwater situations.. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.