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Amazon.com: Customer reviews: Pisces 11 lb Midnight Pearl Aquarium Gravel Substrate for Aquariums, terrariums and vivariums, 2-4mm
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Amazon.com : AquaNatural Sugar White Sand 10lb Substrate for aquascaping, Aquariums, vivariums and terrariums : Pet Supplies
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Amazon.com : AquaNatural Gold Pearl 10lb Gravel Substrate for Aquariums, terrariums and vivariums, 2-4mm : Pet Supplies
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Travis on Twitter: "I can make terrain with that! You can get cheaper bags of rocks and sand from hardware or garden supply places, but my money is on aquarium supplies because
![Amazon.com : AquaNatural Sugar White Sand 10lb Substrate for aquascaping, Aquariums, vivariums and terrariums : Pet Supplies Amazon.com : AquaNatural Sugar White Sand 10lb Substrate for aquascaping, Aquariums, vivariums and terrariums : Pet Supplies](https://m.media-amazon.com/images/I/712QeDEpCbS._AC_UF1000,1000_QL80_.jpg)