Seachem Meridian Oolitic Aragonite Substrate – 19.8 Lb.

This aquarium substrate has fairly uniform 1/4 to 1/2 mm spherical or egg-shaped grains for reef and marine aquaria. The grains are aragonite, a naturally occurring calcium carbonate material made in the shells of many marine organisms. It has a superior buffering capacity to keep pH stable in a range suitable for most marine aquariums.

The size and color of the gravel and substrates listed can vary due to natural availability and the resolution of your computer monitor.

For help selecting how much gravel you need for your aquarium, check our Aquarium Substrate Buying Guide.

Specifications
MPN	3406
Manufacturer	Seachem
Color	Tan
Material	Sand
Package Size	19.8 lb.
Grain Size	0.25-0.5mm
Internal Id	26623