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Aquarium Supplies  
Additives
Air Pumps
Aquariums
Books & Cd's
Calcium Reactors
CO2 Regulator Kits
Chillers
Controllers
Dosing Pumps/Top-Off
Filters
Filter Media
Food
Freshwater Products
Heaters
Hydrometer
Lighting
Maintenance
Medications
Miscellaneous
Overflow Boxes
Ozonizers
Plumbing Parts
Powerheads
Protein Skimmers
Pumps (External)
Reverse Osmosis
Salt Mix
Substrate
Test Kits
Thermometers
UV Sterilizers
Wavemakers
Wet/Dry Filters









Aquarium Substrates

Substrate is often used for cosmetic reasons to create a natural-looking environment inside the aquarium. But in addition to cosmetics, substrate plays a vital role in biological filtration by providing surface area in which nitrifying bacteria can grow.

Larger grain sizes—often referred to as crushed coral—are frequently used in fish-only aquariums because they allow for easier removal of detritus by vacuuming the substrate. In the reef aquarium, finer grains—generally referred to as sand—are used since the substrate provides a larger surface area that does not need to be vacuumed.

CaribSea Arag-Alive substrate contains nitrifying bacteria that 'seeds' an aquarium to speed up the cycling process. For fine substrate, 90 pounds covers a cubic foot. For coarser grains, 70 pounds covers a cubic foot. If you need help deciding how much substrate you’ll need, don’t hesitate to contact us for advice.

Along with saltwater aquarium substrate, you’ll also find calcium reactor media, refugium mud and specialized gravel for freshwater planted aquariums in this section.
Substrates
Brightwell Aquatics KoraLagoon Substrat (Substrate)
A blend of high-purity aragonite particulate grades to simulate the natural substrate particle profile of tropical reef lagoons.
CaribSea Substrate
Highest quality aragonite sand for your marine aquarium. Many different grain sizes to choose from, also available as live sand.
CaribSea Calcium Reactor Media
A complete reactor media containing not only calcium and carbonate, but essential trace elements as well.
EcoSystem Aquarium Miracle Mud
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.
Freshwater Planted/Cichlid Substrates
Ideal substrate for freshwater aquariums with live plants. Helps grow healthy and vibrant freshwater plants.
KNOP KORALlith & Reefbase Media
KNOP KORALlith and KNOP ReefBase are natural and phosphate-free calcium granulate that originates from fossilized marine habitats.
Kent Marine BioSediment
Biofiltration Substrate for Refugiums, Mud Filters, All Marine Aquariums, and Seagrass Beds.
Korallin Natural CaCO3 Media
It is the most ideal natural substrate for all saltwater aquariums. It consists of dead coral skeletons that are broken and crushed by the action of the ocean waves.
Red Sea Success Reef Base Substrate
Contains Aragonite. Natural Porous structure provides maximum surface area for biological filtration. Smooth “sphere” shape prevents damage to the burrowing invertebrates or jawfish. Free from harmful impurities including nitrates and phosphates. Pre-washed.
ROWA Reactor Media
ROWAlith C+ is recommended for Deltec Fluidised Calcium reactors and is 50:50 blend of Rowalith C and Rowalith W. ROWAkalk supplies calcium to build reef aquarium inhabitants their skeletons and shells.
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