CaribSea Instant Aquarium Rio Grande Gravel

CaribSea Instant Aquarium Rio Grande Gravel Take the guess work out of establishing an aquarium with CaribSea Instant Aquarium Rio Grande Gravel. With this fine grade brown-colored gravel all you need is tap water to get started in establishing an aquarium. Complete with living, water-purifying bacteria this gravel detoxifies metals, eliminates ammonia, neutralizes chlorine and chloramines and provides a slime coat for stressed fish. Instant Aquarium also reduces nitrates and nitrites.