Saltwater Mixes

34 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.
  • Fritz Aquatics ProAquatics Reef Pro Mix Complete Marine Salt
    Fritz Aquatics Pro Aquatics Reef Pro Mix Complete Marine Salt is a high quality sea salt blend for reef aquariums containing all essential major, minor and trace elements necessary to create a healthy marine environment.

    Price From: USD 21.24

    Price From: USD 21.24

  • Seachem Vibrant Sea Salt - 220 gal
    • A highly concentrated blend of fast dissolving marine salts
    • Enhanced potassium, superior calcium & alkalinity stability
    • Ideal for all marine, reef and closed reef aquarium systems
    • Nitrate & phosphate free, safe for all saltwater fish/plants
    • Vibrant Sea Salt replicates natural marine & reef waters
    USD 79.03
    USD 79.03
  • Seachem Vibrant Sea Salt - 60 gal
    • A highly concentrated blend of fast dissolving marine salts
    • Enhanced potassium, superior calcium & alkalinity stability
    • Ideal for all marine, reef and closed reef aquarium systems
    • Nitrate & phosphate free, safe for all saltwater fish/plants
    • Vibrant Sea Salt replicates natural marine & reef waters
    USD 23.19
    USD 23.19
  • Coralife Marine Salt Mix - 150 gal Bucket
    • Loaded with broad spectrum biological activity
    • This is an excellent scientific grade marine salt
    • Unsurpassed in purity, quality & performance
    USD 43.78
    USD 43.78
  • Coralife Marine Salt Mix - 50 gal Bag
    • Loaded with broad spectrum biological activity
    • This is an excellent scientific grade marine salt
    • Unsurpassed in purity, quality & performance

    Regular Price: USD 14.99

    Sale Price USD 13.48

    Regular Price: USD 14.99

    Sale Price USD 13.48

  • Kent Marine Reef Salt 200 gal Mix - Box - 58 lb
    • Fully buffered and contains optimal levels of Calcium & Magnesium
    • Highly purified ingredients for quick dissolving and solubility
    • Uniform blend of major, minor, and trace elements
    • Nitrate and Phosphate free!

    Regular Price: USD 73.10

    Sale Price USD 43.98

    Regular Price: USD 73.10

    Sale Price USD 43.98

    Out of stock

  • Kent Marine Reef Salt 200 gal Mix - Bucket - 58 lb
    • Fully buffered and contains optimal levels of Calcium & Magnesium
    • Highly purified ingredients for quick dissolving and solubility
    • Uniform blend of major, minor, and trace elements
    • Nitrate and Phosphate free!

    Regular Price: USD 75.36

    Sale Price USD 50.58

    Regular Price: USD 75.36

    Sale Price USD 50.58

  • Oceanic Natural Sea Salt Mix - 25 gal
    • This 7.25 lb bag will make 25 gallons of saltwater!
    • Superior solubility that creates crystal clear water
    • Containing calcium and natural trace elements
    • This salt is a healthy result for your aquatic life
    • Simple to open package for easy maintenance
    USD 8.99
    USD 8.99

    Out of stock

  • Coralife Marine Salt Mix - 200 gal Box
    • Loaded with broad spectrum biological activity
    • This is an excellent scientific grade marine salt
    • Unsurpassed in purity, quality & performance

    Regular Price: USD 61.85

    Sale Price USD 39.58

    Regular Price: USD 61.85

    Sale Price USD 39.58

    Out of stock

  • Oceanic Natural Sea Salt Mixes
    Description Coming Soon

    Price From: USD 2.49

    Price From: USD 2.49

    Out of stock

  • Fritz ProAquatics Reef Pro Mix Complete Marine Salt - 200 gal - [4 pk 50 gal]
    • Professional quality sea salt mix for reef aquariums
    • Carefully formulated to maintain the health of your fish
    • Manufactured with only the highest quality raw materials
    • Contains all of the elements found in natural sea water
    • Tested & safe, being free of nitrate, phosphate, and ammonia
    USD 67.99
    USD 67.99

    Out of stock

  • Fritz ProAquatics Reef Pro Mix Complete Marine Salt - 53 gal
    • Professional quality sea salt mix for reef aquariums
    • Carefully formulated to maintain the health of your fish
    • Manufactured with only the highest quality raw materials
    • Contains all of the elements found in natural sea water
    • Tested & safe, being free of nitrate, phosphate, and ammonia
    USD 21.24
    USD 21.24
  • Fritz ProAquatics Reef Pro Mix Complete Marine Salt - 180 gal
    • Professional quality sea salt mix for reef aquariums
    • Carefully formulated to maintain the health of your fish
    • Manufactured with only the highest quality raw materials
    • Contains all of the elements found in natural sea water
    • Tested & safe, being free of nitrate, phosphate, and ammonia
    USD 67.99
    USD 67.99
  • Fritz ProAquatics Reef Pro Mix Complete Marine Salt - 200 gal
    • Professional quality sea salt mix for reef aquariums
    • Carefully formulated to maintain the health of your fish
    • Manufactured with only the highest quality raw materials
    • Contains all of the elements found in natural sea water
    • Tested & safe, being free of nitrate, phosphate, and ammonia
    USD 63.74
    USD 63.74
  • Fritz Aquatics Reef Pro Mix
    Description Coming Soon!

    Price From: USD 4.50

    Price From: USD 4.50

  • Seachem Vibrant Sea Salt
    Vibrant Sea Salt offers an ideal blend of highly concentrated, fast dissolving salts to benefit all marine, reef and closed reef aquariums. It contains superior calcium and alkalinity stability with enhanced potassium. Available in a variety of sizes.

    Price From: USD 23.19

    Price From: USD 23.19

  • Coralife Marine Salt Mix - 200 gal Bucket
    • Loaded with broad spectrum biological activity
    • This is an excellent scientific grade marine salt
    • Unsurpassed in purity, quality & performance

    Regular Price: USD 53.99

    Sale Price USD 49.48

    Regular Price: USD 53.99

    Sale Price USD 49.48

  • Kent Marine Reef Salt 10 Gallon Mix - Pouch - 3 lb
    • Fully buffered and contains optimal levels of Calcium & Magnesium
    • Highly purified ingredients for quick dissolving and solubility
    • Uniform blend of major, minor, and trace elements
    USD 4.33
    USD 4.33
  • 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.
    USD 85.27
    USD 85.27
  • 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.
    USD 89.68
    USD 89.68

    Out of stock

  • 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.

    Regular Price: USD 70.99

    Sale Price USD 66.34

    Regular Price: USD 70.99

    Sale Price USD 66.34

  • 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 - 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 27.99
    USD 27.99
  • 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 10.31

    Regular Price: USD 12.99

    Sale Price USD 10.31

  • 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 7.85

    Regular Price: USD 7.99

    Sale Price USD 7.85

  • 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 8.27

    Sale Price USD 6.03

    Regular Price: USD 8.27

    Sale Price USD 6.03

    Out of stock

  • Hagen Living Sea Hydrometer with Thermometer
    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.

    Price From: USD 6.03

    Price From: USD 6.03

    Out of stock

  • Oceanic Natural Sea Salt Mix - 5 gal
    • This 1.45 lb bag will make 5 gallons of saltwater!
    • Superior solubility that creates crystal clear water
    • Containing calcium and natural trace elements
    • This salt is a healthy result for your aquatic life
    • Simple to open package for easy maintenance
    USD 2.49
    USD 2.49

    Out of stock

  • Kent Marine Reef Salt Mixes
    • Fully buffered and contains optimal levels of Calcium & Magnesium
    • Highly purified ingredients for quick dissolving and solubility
    • Uniform blend of major, minor, and trace elements
    • Nitrate and Phosphate free!

    Price From: USD 4.33

    Price From: USD 4.33

  • Tropic Marin Bio-Actif Sea Salt
    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.

    Price From: USD 89.68

    Price From: USD 89.68

    Out of stock

  • Tropic Marin Pro Reef Salt Mix
    • 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.

    Price From: USD 85.27

    Price From: USD 85.27

  • Coralife Marine Salt Mix
    This Scientific Grade Marine Salt is formulated with ingredients of the highest quality with optimal levels of calcium and magnesium. It contains all essential major and trace elements to help the various forms of life found in marine tanks flourish.

    Price From: USD 13.48

    Price From: USD 13.48

  • Red Sea Coral Pro Salts
    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.

    Price From: USD 27.99

    Price From: USD 27.99

  • 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.
    USD 8.58
    USD 8.58