1.Non-toxic, do not affect the quqlity of water, Create a natural and green living environment for fish and shrimp.
2.Ceramic stones provide a lightweight alternative to real stone in your aquarium. The hollow caves provides shelter, hiding spots, and spawning sites for your fish.
Small (9×6.5×6.5 cm) With One Hole, Pore Diameter (3 cm)
Medium (12×10×8 cm) With One Hole, Pore Diameter (4.5 cm)
Large (17×11×8.5 cm) With Two Hole, Front Hole (6.5×5 cm), Left Hole (5.5×4.5 cm)
Color of pictures and video may differentiate from the products, by light and view angle.