Nature's Ocean Aragonite Sand for Aquarium, 10-Pound
Nature's Ocean Aragonite Sand#1 10LBS (Grain size: 1.2 -1.7mm). Premium Aragonite Reef Substrate for aquariums reduces Nitrates & Maintains ph. Ideal for reef system tank bottoms, denitrifying anaerobic beds, extremely high surface area filter media. For Best Results Use as Follows: Pre-washed Minimum Rinse Required.