Nobody puts as much effort into bringing you the quality and selection of aragonite products as CaribSea does. All of our substrates are scientifically sound and proven products. Aragonite, purposely engineered and free of impurities such as ash, metals, pesticides, and silica, allows you to create a safe and beautiful environment for your fish and invertebrates. Why take chances with other brands?
Seaflor Special Grade Reef Sand - This grade of aragonite is specifically engineered for plenum type nitrate reducing beds or anywhere a deeper bed is called for. The pore water space created by the precision grading also allows maximum pH support and dissolution of calcium carbonate. This is a very versatile product! Grain size 1.0 - 2.0 mm.
What is Aragonite?
Aragonite is a naturally occurring calcium bearing mineral. It is precipitated in areas where cold ocean water, saturated with calcium and carbonate, comes in contact with warm shallow waters. It is also formed by sea creatures like corals, shells, and coralline algaes that use aragonite to build their skeletons. These materials can accumulate on the ocean floor over eons, forming thick deposits of pure aragonite in areas far from living reef communities; an ideal low environmental impact situation.
So what makes aragonite the perfect marine substrate? When the pH in your aquarium falls below 8.2 (the pH of natural seawater), aragonite begins to dissolve releasing calcium (great for growing coral and for water hardness), carbonate (your buffer), and beneficial trace elements like strontium and magnesium. Your pH comes back up, and the tank stays healthy, without ever adding a single chemical. Other types of calcium carbonate don't react until the pH is in the mid 7's, which is lethal for many forms of marine life. In fact, aragonite holds the highest pH of any gravel or sand, and has up to 30 times the buffering capacity of dolomite, calcite (so called crushed corals), or oyster shell!
Now that we know a little bit about aragonite's chemical performance, let's examine how it helps your biological filtration. Biogenic aragonite is extremely porous, about 20,000 square inches of surface area per cubic inch! Imagine the beneficial bacteria population you can maintain. This is why aragonite is unsurpassed in reducing nitrates, nitrites, and ammonia, allowing a bio-load many times greater than other substrates. Plus, unlike ordinary substrates, aragonite never needs replacement to maintain effectiveness. The performance goes on and on.
CaribSea aragonite really is a remarkable piece of equipment; it's a calcium reactor, a buffer that works when you need it, a trace element additive, a nitrite and nitrate filter, an ammonia reducer, a high capacity bio-filter, and oh yes, a spectacular addition to any marine aquarium!
Why should you choose CaribSea Products?
At CaribSea, we take aquariums seriously. Since 1972, we have supplied hundreds of public aquariums, aquaculture facilities, and hundreds of thousands of dedicated aquarists with millions of pounds of the highest quality marine and freshwater substrates. CaribSea has been in the forefront of the principle of substrate as equipment, not just a decoration. CaribSea substrates are as precisely engineered as any piece of advanced equipment used by today's hobbyists and professionals. CaribSea products are the chemical support, and biological filtation backbone, for many of the most spectacular marine and freshwater displays ever created. After over 30 years in the industry, our product line has expanded to include a wide range of unique products for reptiles, arachnids, ponds, freshwater, and marine aquariums including a line of truly revolutionary additives. CaribSea is your aragonite source and so much more.