CaribSea Ocean Direct Oolite Sand 40lb

Packaged in a breathable bag with a thin film of real ocean water (sand will be damp) to preserve 1,000 times more living bacteria than other preservation methods - no added chenicals or special processing. Ocean Direct aragonite live sand ensures faster, safer initial cycling and better bio-filtration throughout the life of your reef system. Delivers millions of living bacteria per pound, reduces nitrate, enhances buffering for the life of your system, and discourages nuisance algae. Also aids coral growth and resists the precipitation of carbonate minerals. 77% of Original Grade Substrate is, by weight, less than 1 mm in size (most of that are smaller than 0.66 mm). Oolite Substrate is almost exclusively sub 1 mm oolite (most of this will be less than 0.60 mm in size).

Used by the foremost public aquariums, research and government institutions, and professionals worldwide. Proven to reduce nitrates.

• Buffers for the life of the system
• Discourages nuisance algae
• Bio-coated surfaces resist the precipitation of carbonate minerals
• Aids the growth of living corals
• No silica