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At AquaCave, we offer some of the best selection & best prices on Sand and substrate for your marine, reef, and freshwater aquarium.

45 of 45 Items
  • Brightwell Aquatics KoraLagoon Substrate, 27 kg. / 60 lb.

    Brightwell Aquatics

    Brightwell Aquatics KoraLagoon Substrate, 27 kg. / 60 lb.

    Brightwell Aquatics KoraLagoonSubstrat Aragonite RefugiumSubstrateA blend of high-purity aragonite particulate grades to simulate the natural substrate particle profile of tropical reef lagoonsBrightwell Aquatics KoraLagoon Substrate, 27 kg. / 60 lb...

    $319.95
  • MIRACLE MUD, Marine 10 lb. by EcoSystem Aquarium

    EcoSystem Aquarium

    MIRACLE MUD, Marine 10 lb. by EcoSystem Aquarium

    MIRACLE MUD, Marine 10 lb. by EcoSystem Aquarium Miracle Mud is a product of EcoSystem Aquarium® that has been carefully formulated to include all the essential trace elements, minerals, and components necessary to maintain a successful aquarium...

    $59.99
  • MIRACLE MUD 2, FRESHWATER 10 lb. by EcoSystem Aquarium

    EcoSystem Aquarium

    MIRACLE MUD 2, FRESHWATER 10 lb. by EcoSystem Aquarium

    MIRACLE MUD 2, FRESHWATER 10 lb. by EcoSystem Aquarium Miracle Mud is a product of EcoSystem Aquarium® that has been carefully formulated to include all the essential trace elements, minerals, and components necessary to maintain a successful...

    $59.95
  • Fluval Bio Stratum 17.6 lbs. Fluval Bio Stratum 17.6 lbs. Fluval Bio Stratum 17.6 lbs. Fluval Bio Stratum 17.6 lbs. Fluval Bio Stratum 17.6 lbs.

    Fluval

    Fluval Bio Stratum 17.6 lbs.

    Fluval Bio Stratum 17.6 lbs. Fluval's All-New Bio-Stratum is infused with BENEFICIAL "BIOACTIVE" BACTERIA that will break down waste, kickstart the nitrogen cycle and rapidly reduce ammonia levels to help stabilize water conditions in new aquariums and...

    Was: $49.99
    Now: $42.49
  • Fluval Plant and Shrimp Stratum 17.6 lb.

    Fluval

    Fluval Plant and Shrimp Stratum 17.6 lb.

    Fluval Plant and Shrimp Stratum 17.6 lb. Collected from the mineral rich foothills of the famous Mount Aso Volcano in Japan, Fluval Stratum is the ideal substrate for stimulating the growth of aquatic plants in freshwater aquariums. Plant...

    Was: $49.95
    Now: $42.46
  • CaribSea Mineral-Mud - Refugium Media, 1 gal.

    CaribSea

    CaribSea Mineral-Mud - Refugium Media, 1 gal.

    Quick Facts- Ideal for refugiums- very clean- compatible with soft burrowing animalsClean and effective refugium substrateA unique blend of sediments that duplicate tropical fringing coastal mangrove environments. Its particles are in a size range...

    $39.95
  • MIRACLE MUD 2, FRESHWATER 5 lb. by EcoSystem Aquarium

    EcoSystem Aquarium

    MIRACLE MUD 2, FRESHWATER 5 lb. by EcoSystem Aquarium

    MIRACLE MUD 2, FRESHWATER 5 lb. by EcoSystem Aquarium Miracle Mud is a product of EcoSystem Aquarium® that has been carefully formulated to include all the essential trace elements, minerals, and components necessary to maintain a successful...

    $39.95
  • MIRACLE MUD, Marine 5 lb. by EcoSystem Aquarium

    EcoSystem Aquarium

    MIRACLE MUD, Marine 5 lb. by EcoSystem Aquarium

    MIRACLE MUD, Marine 5 lb. by EcoSystem Aquarium Miracle Mud is a product of EcoSystem Aquarium® that has been carefully formulated to include all the essential trace elements, minerals, and components necessary to maintain a successful aquarium...

    $39.95
  •  CaribSea Arag-Alive Bahamas Oolite Live Sand, 20 lb.   CaribSea Arag-Alive Bahamas Oolite Live Sand, 20 lb.

    CaribSea

    CaribSea Arag-Alive Bahamas Oolite Live Sand, 20 lb.

    Live Aragonite Sand You can now bring the world’s most exotic reefs into your home with CaribSea’s Arag-Alive!™ substrates. Eight environmentally accurate ecoscapes, developed from CaribSea’s cooperation with public aquariums and zoological parks where...

    Was: $38.95
    Now: $33.11
  •  CaribSea Arag-Alive Bimini Pink Live Sand, 20 lb.   CaribSea Arag-Alive Bimini Pink Live Sand, 20 lb.

    CaribSea

    CaribSea Arag-Alive Bimini Pink Live Sand, 20 lb.

    Live Aragonite Sand You can now bring the world’s most exotic reefs into your home with CaribSea’s Arag-Alive!™ substrates. Eight environmentally accurate ecoscapes, developed from CaribSea’s cooperation with public aquariums and zoological parks where...

    Was: $38.95
    Now: $33.11