Pewter Black 20lb Gravel Substrate for aquascaping, Aquariums, vivariums and terrariums 4-6mm. Included Components: 1 x Pewter Black 20lb. #232 in Aquarium Gravel. A dark pewter gray when dry - jet black when wet, this is a great way to way to give your aquarium a dramatic look without using to artifical substrate.
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