Shop for Marine Substrates

Natural, pre-washed gravel substrate is perfect for marine aquariums.

Functional and beautiful aragonite substrate for all types of marine aquariumsContains millions of beneficial marine bacteria to enhance biological filtrationChoose the style that's right for your particluar marine aquarium setupBeautiful marine substrate packed with millions of heterotrophic, autotrophic, and chemolithotrophic bacteria. Huge beneficial bacteria population aids in waste reduction and dramatically reduces cycling time in new setups. Use alone or to kick-start existing substrate bed. Arag-Alive is specially egineered to supress "new tank syndrome" and compress the ammonia cycle. It's like having a nitrite and nitrate filter, ammonia reducer, and a high-capacity biological filter for your marine aquarium. Includes Bio-Magnet clarifier to clear water fast and enhance biological efficiency. Arag-Alive marine substrates contain aragonite, a source of calcium, carbonate, and beneficial trace elements to, naturally maintain proper pH without the constant addition of chemicals. Contains more surface area for bacterial adhesion: approximately 20,000 square inches per cubic inch for unsurpassed performance in reducing nitrate, nitrite, and ammonia. Never needs to be replaced and works with natural bacteria to enhance performance over the full life of your aquarium. Lowest in phosphate and does not contain tar, harmful organics, silica, or other impurities. Used by the foremost public aquariums, research and government institutions, and professionals worldwide.Available in 3 grades for use in all applications: 1-2 mm diameter for plenums or for deep beds, 2-4 mm for sumps, mixed grades for jaw fish, and 0.5-1 mm for Berlin systems. Contains 381,000 ppm calcium, 7,390 ppm strontium, 1,050 ppm magnesium, 590,000 ppm carbonate (buffer), and 56 ppm potassium. Arag-Alive also provides molybdenum, barium, boron, selenium, beryllium, and other essential ocean trace elements. -->Fiji Pink Sand0.5-1.5 mm; available in 20 lb water packed bagSpecial Grade Sand1.0-2.0 mm;

For marine aquariums.

Product Details
Use one pound per gallon
Graded aragonite sand nitrifying bacteria

Use with marine aquariums without undergravel filters

Product Details
Use one pound per gallon
Graded aragonite sand

Use with marine aquariums and reef aquariums.

Product Details
Use one pound per gallon. 2 pounds per gallon for deep sand bed systems.
Graded aragonite sand

Aragonite live sand with millions of nitrate-reducing bacteriaEnsures faster, safer initial cycling and better bio-filtration once establishedFunctional marine substrate increases buffering capacity of your aquariumReal Caribbean live sand in a patent pending breathable bag. Ocean Direct aragonite live sand ensures faster, safer initial cycling and better bio-filtration throughout the life of your reef system. Delivers millions of living bacteria per pound, reduces nitrate, enhances buffering for the life of your system, and discourages nuisance algae. Also aids coral growth and resists the precipitation of carbonate minerals. 77 percent of Original Grade Substrate is, by weight, less than 1 mm in size (most of that are smaller than 0.66 mm). Oolite Substrate is almost exclusively sub 1 mm oolite (most of this will be less than 0.60 mm in size).Used by the foremost public aquariums, research and government institutions, and professionals worldwide. Proven to reduce nitrates. Buffers for the life of the systemDiscourages nuisance algaeBio-coated surfaces resist the precipitation of carbonate mineralsAids the growth of living coralsNo silicaPlease click on "More Information" for directions for use.

Create an exotic look in your fresh or saltwater aquarium with this black Tahitian Moon sand.

Since the natural aggregate itself is an extremely abrasive silica mineral, care should be taken not to overwash. Little if any washing is necessary and a simple rinse is sufficient to prewet the surface to reduce floating of dry particles or to remove any dust which may be present

All components are non-toxic and ideally suited for Tropical Fish Aquariums and Terrariums.

Little if any washing is necessary and a simple rinse is sufficient to pre-wet the surface to reduce floating of dry particles or to remove any dust which may be present.