They are safe for use in your scenery and will not deteriorate in the weather  like resin does. Perfect scale for aquariums/aquascaping, these stones are easy to incorporate into your tank
They are PH neutral, so are safe for any aquarium. They can be stacked and glued to form fish caves/caverns or benches/seats and broken to create different sizes. We have sorted and washed these stones and offer them in several size ranges from pathway stones to small scale gravel. Check out our other sizes!