Saltwater Mixes

21 Item(s)

Maintaining perfect water conditions is a little trickier with saltwater than it is with freshwater. We know how hard it is to find quality products to help you achieve the right salt levels in your aquarium, which is why we’ve tracked down these top saltwater mixes. At Big Al’s Pets, you’ll find a great selection of salt mixes for your water that are healthy and safe for your fish and other inhabitants. We’ve found great products from trusted name brands like Instant Ocean and Red Sea to ensure you get the best results every time. In addition, you’ll find convenient hydrometers to ensure that you maintain proper and stable salinity levels in your aquarium water.

Because you only want the best when it comes to quality and price, you’ll love that many of our aquarium saltwater mixes are regularly on sale. In addition to our sale items, every product on our site is competitively priced to ensure that you never overpay for your aquarium essentials. Lastly, we make it easy to shop for the saltwater mixes that suit your needs, which is why each product is clearly labeled to indicate how many gallons of saltwater it will make.
  • Instant Ocean Sea Salt Mix - 160 gal
    The most carefully formulated and universally preffered sea salt in the world. The #1 choice of hobbyists, public aquariums, and scientific research facilities. The industry standard for quality, consistency, and value for more than 50 years.

    Regular Price: USD 46.99

    Sale Price USD 39.99

    Regular Price: USD 46.99

    Sale Price USD 39.99

  • Tropic Marin Pro Reef Sea Salt Mix - 200 gal
    • Manufactured from pure, pharmaceutical grade salts, free from nitrates, phosphates and other unwanted chemicals.
    • Contains all major and all 70 trace elements in the exact proportions found in tropical sea water.
    • Production under scientific supervision in the most modern facilities designed for the preparation of high-purity pharmaceuticals.
    • Perfect solubility and highest homogeneity of the mixture.

    Regular Price: USD 99.99

    Sale Price USD 83.99

    Regular Price: USD 99.99

    Sale Price USD 83.99

  • Instant Ocean Reef Crystals Salt Mix - 10 gal
    Enriched formulation. Optimum effectiveness. Specially formulated for use in reef aquariums, Reef Crystals contains essential ocean reef elements in concentrations greater than those found in natural seawater.

    Regular Price: USD 5.99

    Sale Price USD 4.99

    Regular Price: USD 5.99

    Sale Price USD 4.99

  • Instant Ocean Reef Crystals Salt Mix - 25 gal
    Enriched formulation. Optimum effectiveness. Specially formulated for use in reef aquariums, Reef Crystals contains essential ocean reef elements in concentrations greater than those found in natural seawater.

    Regular Price: USD 10.99

    Sale Price USD 9.89

    Regular Price: USD 10.99

    Sale Price USD 9.89

  • Instant Ocean Sea Salt Mix - 10 gal
    The most carefully formulated and universally preffered sea salt in the world. The #1 choice of hobbyists, public aquariums, and scientific research facilities. The industry standard for quality, consistency, and value for more than 50 years.

    Regular Price: USD 5.49

    Sale Price USD 3.99

    Regular Price: USD 5.49

    Sale Price USD 3.99

  • Instant Ocean Sea Salt Mix - 25 gal
    The most carefully formulated and universally preffered sea salt in the world. The #1 choice of hobbyists, public aquariums, and scientific research facilities. The industry standard for quality, consistency, and value for more than 50 years.

    Regular Price: USD 8.99

    Sale Price USD 7.99

    Regular Price: USD 8.99

    Sale Price USD 7.99

  • Instant Ocean Reef Crystals Salt Mix - 200 gal
    Enriched formulation. Optimum effectiveness. Specially formulated for use in reef aquariums, Reef Crystals contains essential ocean reef elements in concentrations greater than those found in natural seawater.

    Regular Price: USD 54.99

    Sale Price USD 49.49

    Regular Price: USD 54.99

    Sale Price USD 49.49

  • Instant Ocean Sea Salt Mix - 200 gal
    The most carefully formulated and universally preffered sea salt in the world. The #1 choice of hobbyists, public aquariums, and scientific research facilities. The industry standard for quality, consistency, and value for more than 50 years.

    Regular Price: USD 44.99

    Sale Price USD 39.99

    Regular Price: USD 44.99

    Sale Price USD 39.99

  • Instant Ocean Reef Crystals Salt Mix - 160 gal
    Enriched formulation. Optimum effectiveness. Specially formulated for use in reef aquariums, Reef Crystals contains essential ocean reef elements in concentrations greater than those found in natural seawater.

    Regular Price: USD 52.99

    Sale Price USD 44.99

    Regular Price: USD 52.99

    Sale Price USD 44.99

  • Instant Ocean Sea Salt Mix - 50 gal
    The most carefully formulated and universally preffered sea salt in the world. The #1 choice of hobbyists, public aquariums, and scientific research facilities. The industry standard for quality, consistency, and value for more than 50 years.

    Regular Price: USD 14.99

    Sale Price USD 12.99

    Regular Price: USD 14.99

    Sale Price USD 12.99

  • Instant Ocean Reef Crystals Salt Mix - 50 gal
    Enriched formulation. Optimum effectiveness. Specially formulated for use in reef aquariums, Reef Crystals contains essential ocean reef elements in concentrations greater than those found in natural seawater.

    Regular Price: USD 18.99

    Sale Price USD 15.99

    Regular Price: USD 18.99

    Sale Price USD 15.99

  • Coralife BioCube Mini Hydrometer
    The Coralife Biocube Mini Hydrometer can remain submerged inside your aquarium, so you can check your salt level at a glance. Compact design allows for discreet placement in your aquarium. Ideal for saltwater aquariums and sump applications.

    Regular Price: USD 12.99

    Sale Price USD 9.99

    Regular Price: USD 12.99

    Sale Price USD 9.99

  • Red Sea Coral Pro Salt - 55 Gallon
    Ideal salt mix for reef aquariums, encouraging accelerated, healthy growth and enhanced vitality of corals. Includes biologically balanced elevated levels of calcium, magnesium, and carbonates - essential for inducing sustainable coral skeleton growth.
    USD 26.99
    USD 26.99
  • Red Sea Coral Pro Salt - 175 Gallon
    Ideal salt mix for reef aquariums, encouraging accelerated, healthy growth and enhanced vitality of corals. Includes biologically balanced elevated levels of calcium, magnesium, and carbonates - essential for inducing sustainable coral skeleton growth.
    USD 72.99
    USD 72.99
  • Red Sea Coral Pro Salt - 200 gal
    Ideal salt mix for reef aquariums, encouraging accelerated, healthy growth and enhanced vitality of corals. Includes biologically balanced elevated levels of calcium, magnesium, and carbonates - essential for inducing sustainable coral skeleton growth.
    USD 64.99
    USD 64.99
  • Hagen Living Sea Hydrometer with Thermometer - 8"
    Proper salt content is vital to the health and well being of captive marine species. Use the Hagen aquarium hydrometer to determine actual specific gravity of marine aquariums on an ongoing basis.

    Regular Price: USD 6.49

    Sale Price USD 5.49

    Regular Price: USD 6.49

    Sale Price USD 5.49

  • Hagen Living Sea Hydrometer with Thermometer - 12"
    Proper salt content is vital to the health and well being of captive marine species. Use the Hagen aquarium hydrometer to determine actual specific gravity of marine aquariums on an ongoing basis.

    Regular Price: USD 11.49

    Sale Price USD 8.99

    Regular Price: USD 11.49

    Sale Price USD 8.99

  • Instant Ocean Seatest Hydrometer
    Accurate, reliable water test equipment is absolutely vital to creating and sustaining a healthy, successful marine environment. Easy to read and simple to operate.

    Regular Price: USD 9.99

    Sale Price USD 7.99

    Regular Price: USD 9.99

    Sale Price USD 7.99

  • Kent Marine Hydrometer
    The Kent Marine Hydrometer makes measuring aquarium water salinity very simple. Its precision and compact design provides accurate readings that aquarists of any level can understand. Accuracy to 0.001 specific gravity units (Certified calibration).

    Regular Price: USD 7.99

    Sale Price USD 6.99

    Regular Price: USD 7.99

    Sale Price USD 6.99

  • Tropic Marin Bio-Actif Sea Salt Mix - 200 gal
    Bio-Actif Sea Salt combines maximum purity with the protective and growth-promoting action of bioactive substances. It improves overall fish health and increases mating and reproduction levels. Corals display brighter colors and increased growth.

    Regular Price: USD 97.99

    Sale Price USD 89.99

    Regular Price: USD 97.99

    Sale Price USD 89.99

  • Coralife Deep Six Hydrometer
    The Deep Six Hydrometer is calibrated and tested for accuracy using advanced testing procedures. With its durable construction and easy-to-read scales, the deep six is guaranteed to provide years of reliable performance.

    Regular Price: USD 7.49

    Sale Price USD 6.49

    Regular Price: USD 7.49

    Sale Price USD 6.49