The stones appear to be plastic but they look like glass. Some of them wanted to swim to the surface of the tank, but keeping them under water for a while was enough to drown them. At 8.5 ounces per pack, it was enough to cover a few inches of the small tank/bowl I use for Beta fish.
π Enhance Your Aquatic Habitat with Pisces Midnight Pearl Aquarium Gravel!
9 Review
18 Pounds of Natural Polished Decorative Gravel - Pebbles Aquarium Gravel River Rock - Mixed Color Fish Tank Stones - Garden Ornamental River Pebbles Rocks - Polished Gravel for Landscaping (Multicolor)
8 Review
πΎ Zoo Med Excavator Clay Burrowing Substrate, 20 lb - 26406 Laboratories 690108
8 Review
Enhance Your Indoors And Outdoors With Galashield'S Polished Pebbles For Plants, Vases, Aquariums And Landscaping - 5 Lb Bag
11 Review
Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
37 Review
Mini pump Xiaomi Mijia Electric Pump 1S, plastic, black
55 Review
𧲠Efficient Magnetic Fish Tank Cleaner: KEDSUM Floating Clean Brush with Handle Design
34 Review
Greenpro Micranthemum Monte Carlo: Live Large Pearl Grass Aquatic Plant In Tissue Culture Cup For Freshwater Fish Tanks And Aquariums
49 Review