Nature's Ocean Pure Water Pebbles Premium Fresh Water Substrates is natural gravel with 100% acrylic coating. The Raven aquarium gravel is a natural grey slate toned gravel that will not alter the chemistry of the aquarium water. The Raven gravel will help create a realistic, natural environment for your aquarium fish. The non-toxic, colourfast pebbles are suitable for fresh & saltwater aquariums, ponds, and terrariums. Packaged in a 5 lb. bag.

Grain size: 9.5 - 12.7mm