Coral Sand / Base Rock / Lava Rock / Driftwood
CaribSea Special Grade Reef Sand 6.8kg
1.25–1.95 mm diameter grain size. A revolution in reef-keeping! This is
the one you’ve been reading about in all the hobbyist publications.
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 precision grading also allows maximum pH support
and dissolution of calcium carbonate.
CaribSea Aragonite buffers to the highest pH and delivers more calcium, carbonate, and trace elements than any other substrate. Little or no rinsing required, aragonite keeps aquariums healthier, longer.