Live Help Chat

At AquaCave, we offer some of the best selection and best prices on advanced salt mixes and refractometers for you marine and reef aquarium. Synthetic sea salt mixes offer a convenient, do-it-yourself way of creating saltwater for your aquarium. When mixed with RO/DI filtered tap water, synthetic sea salts become pure saltwater with consistent calcium, alkalinity and pH levels. And, thanks to the purity of the formulations, synthetic sea salts are nitrate and phosphate-free, minimizing the likelihood of unwanted algae blooms in your aquarium. Higher-priced salt mixes often contain higher calcium, alkalinity and trace element levels, which make them better suited for the reef aquarium environment.

25 of 25 Items
  • Tropic Marin Syn-Biotic Salt, 200 gal. Tropic Marin Syn-Biotic Salt, 200 gal.

    Tropic Marin

    Tropic Marin Syn-Biotic Salt, 200 gal.

    Tropic Marin Syn-Biotic Salt, 200 gal. Made in Germany The new Tropic Marin Syn-Biotic Sea Salt contains probiotic bacteria for fish and inverts and special prebiotic bacteria food to promote probiotic bacterial growth and to create low-nutrient...

    $135.53
  • Tropic Marin BIO ACTIF Reef Salt, 200 gal.

    Tropic Marin

    Tropic Marin BIO ACTIF Reef Salt, 200 gal.

    Tropic Marin BIO ACTIF Reef Salt, 200 gal. Made in GermanyTropic Marin® BIO-ACTIF Sea Salt contains naturally occurring marine biopolymers, which support the microbiological conditions in an aquarium and thus protect and enhance the growth of aquarium...

    $126.59
  • Tropic Marin PRO REEF Salt, 200 gal.

    Tropic Marin

    Tropic Marin Pro Reef Salt, 200 gal.

    Tropic Marin PRO REEF Salt, 200 gal. Made in Germany Help make sure your reef aquarium environment is as pure and natural as possible with Tropic Marin Pro Reef Aquarium Sea Salt. This premium-quality, completely biodegradable sea salt is made from...

    $126.59
  • Tropic Marin Sea Salt Classic, 200 gal.

    Tropic Marin

    Tropic Marin Sea Salt Classic, 200 gal.

    Tropic Marin Sea Salt Classic Tropic Marin Classic Sea Salt Mix is perfect for aquariums that house even the most sensitive species. The natural balance of elements is made using pharmaceutical salts and free from artificial additives, nitrates, and...

    $99.99
  • Tropic Marin PRO REEF salt, 160 gal. Box Tropic Marin PRO REEF salt, 160 gal. Box

    Tropic Marin

    Tropic Marin PRO REEF salt, 160 gal. Box

    Tropic Marin PRO REEF salt, 160 gal. Box Tropic Marin's Pro-Reef is the ideal foundation for any new tank from fish only to a full-blown reef tank. When used as your regular salt mix it will help bring better ionic equilibrium to the tank, stabilizing...

    $95.82
  • Red Sea Coral Pro Salt - 175 gal. -  Bucket Red Sea Coral Pro Salt - 175 gal. -  Bucket Red Sea Coral Pro Salt - 175 gal. -  Bucket Red Sea Coral Pro Salt - 175 gal. -  Bucket

    Red Sea

    Red Sea Coral Pro Salt - 175 gal. - Bucket

    Red Sea Coral Pro Salt, 175 gal. Mix Red Sea’s Coral Pro Salt contains biologically balanced, elevated levels of the foundation elements (Calcium, Magnesium, Carbonates) necessary for sustainable, accelerated coral growth. Coral Pro...

    $84.99
  • Red Sea Coral Pro Salt - 200 Gal. - Commercial Sack Red Sea Coral Pro Salt - 200 Gal. - Commercial Sack

    Red Sea

    Red Sea Coral Pro Salt - 200 Gal. - Commercial Sack

    Red Sea Coral Pro Salt Sack - 55 lbs Makes 200 Gallons Marine Salt Coral pro salt is designed to provide biologically balanced elevated levels of foundation elements necessary for substainable accelerated growth and enhanced vitality of all corals...

    $84.99
  • Red Sea Salt - 175 gal. - Bucket Red Sea Salt - 175 gal. - Bucket

    Red Sea

    Red Sea Salt - 175 gal. - Bucket

    Red Sea Salt Mix - 175 gal - Bucket Red Sea Salt is designed to provide the exact parameters of tropical reef water with a slightly elevated alkalinity as needed in a closed marine system.Red Sea salt is ideal for fish and invertebrate systems or for...

    $84.99
  • Red Sea Salt, 200 Gal. Commercial Sack Red Sea Salt, 200 Gal. Commercial Sack

    Red Sea

    Red Sea Salt, 200 Gal. Commercial Sack

    Red Sea Salt, 200 Gal. Commercial Sack Red Sea Salt is designed to provide the exact parameters of tropical reef water with a slightly elevated alkalinity as needed in a closed marine system.Red Sea salt is ideal for fish and invertebrate...

    $84.99
  • Tropic Marin Classic REEF salt, 160 gal. Box Tropic Marin Classic REEF salt, 160 gal. Box

    Tropic Marin

    Tropic Marin Classic REEF salt, 160 gal. Box

    Tropic Marin Classic REEF salt, 160 gal. Box Tropic Marin Classic Sea Salt Mix is perfect for aquariums that house even the most sensitive species. The natural balance of elements is made using pharmaceutical salts and free from artificial additives,...

    $83.98
  •  Red Sea Salt - 160 gal - Box  Red Sea Salt - 160 gal - Box

    Red Sea

    Red Sea Salt - 160 gal - Box

     Red Sea Salt - 160 gal - Box Red Sea Salt contains biologically balanced, elevated levels of the foundation elements (Calcium, Magnesium, Carbonates) necessary for sustainable, accelerated coral growth. Red Sea Salt is ideal for...

    $79.99
  • Red Sea Coral Pro Salt - 160 gal - Box Red Sea Coral Pro Salt - 160 gal - Box

    Red Sea

    Red Sea Coral Pro Salt - 160 gal - Box

    Red Sea Coral Pro Salt - 160 gal - Box Red Sea’s Coral Pro Salt contains biologically balanced, elevated levels of the foundation elements (Calcium, Magnesium, Carbonates) necessary for sustainable, accelerated coral growth. Coral Pro Salt is...

    $79.99
  • Fritz PRO R.P.M. Salt Mix - 55 lb Box (4 x 50 Gal Mix) Fritz PRO R.P.M. Salt Mix - 55 lb Box (4 x 50 Gal Mix)

    Fritz

    Fritz PRO R.P.M. Salt Mix - 55 lb Box (4 x 50 Gal Mix)

    Fritz PRO R.P.M. Salt Mix - 55 lb Box (4 x 50 Gal Mix) Fritz RPM - Reef Pro Mix is manufactured using only the highest quality raw materials. Formulated by researchers and marine scientists, RPM contains all of the necessary major and minor elements of...

    $75.99
  •   Fritz PRO R.P.M. Salt Mix - 55 lb Box - 200 Gal Mix

    Fritz

    Fritz PRO R.P.M. Salt Mix - 55 lb Box - 200 Gal Mix

     Fritz PRO R.P.M. Salt Mix 55 lb Box (200 Gal Mix) Fritz ProAquatics Reef Pro Mix (RPM) is manufactured using only the highest quality raw materials. Formulated by researchers and marine scientists, RPM contains all of the necessary major and minor...

    $72.99
  • Fritz PRO R.P.M Salt Mix 48 lb Bucket (180 Gal) Fritz PRO R.P.M Salt Mix 48 lb Bucket (180 Gal)

    Fritz

    Fritz PRO R.P.M Salt Mix 48 lb Bucket (180 Gal)

    Fritz PRO R.P.M Salt Mix 48 lb Bucket (180 Gal) Fritz ProAquatics Reef Pro Mix (RPM) is manufactured using only the highest quality raw materials. Formulated by researchers and marine scientists, RPM contains all of the necessary major and minor...

    $72.99
  • Red Sea Coral Pro Salt, 55 gal. - Bucket Red Sea Coral Pro Salt, 55 gal. - Bucket Red Sea Coral Pro Salt, 55 gal. - Bucket Red Sea Coral Pro Salt, 55 gal. - Bucket Red Sea Coral Pro Salt, 55 gal. - Bucket

    Red Sea

    Red Sea Coral Pro Salt, 55 gal. - Bucket

    Red Sea Coral Pro Salt, 55 gal. - Bucket Red Sea’s Coral Pro Salt contains biologically balanced, elevated levels of the foundation elements (Calcium, Magnesium, Carbonates) necessary for sustainable, accelerated coral growth. Coral Pro Salt is ideal...

    $39.99
  • Red Sea Salt, 55 gal. - Bucket Red Sea Salt, 55 gal. - Bucket Red Sea Salt, 55 gal. - Bucket

    Red Sea

    Red Sea Salt, 55 gal. - Bucket

    Red Sea Salt, 55 gal. - Bucket Red Sea Salt is designed to provide the exact parameters of tropical reef water with a slightly elevated alkalinity as needed in a closed marine system.Red Sea salt is ideal for fish and invertebrate systems or...

    $39.99
  • Aquarium Salt 1lb by Fritz

    Fritz

    Aquarium Salt 1lb by Fritz

    Adding salt to your aquarium can save your fish's lives! Fritz A+ Aquarium Salt has been scientifically proven to be a superior, natural and safe way to decrease fish loss and reduce toxic nitrite uptake.Adding salt to your aquarium can save your fish's...

    $4.95
25 of 25 Items