Beautiful and versatile Seaflor Special Grade Reef Sand is the perfect substrate for reef aquariums. Use as a gorgeous substate or as a functional substrate for nitrate-reducing systems such as Plenum or Berlin systems. Consistent grade aragonite substrate allows for better dissolution of minerals, like calcium and carbonates. The addition of small shells makes it ideal for aquariums with mature jawfish or burrowing invertebrates. Typical Size: 1.0 - 2.0mm grain.

Determining how much substrate to buy for your new aquarium depends on the size and shape of your tank, as well as the depth of the substrate bed you wish to achieve. Other factors include the type of aquascaping structure you're planning, and the grain size of the manufacturer's substrate of choice.

While this may sound complicated, don't worry - you won't need to be an algebra whiz to get started!

The simplest rule of thumb to use is to plan 1 lb of substrate per gallon to achieve a 1" bed. Or 2 lbs per gallon for a 2" bed. Since aquariums come in a variety of shapes, tall or long, we recommend the following guide for your reference:

*Does not apply to bow, hex, or corner-shaped aquariums.

Many hobbyists will tell you it's always safer to get more substrate than you think you may need, because then you'll always have some on hand for future renovations or additional setups.