Triple washed and kiln dried - this is one of the cleanest aquarium sands available, no toxins, no foreign matter, 100% natural sand | 0.5 - 1mm in size - it has a dense composition and zero fines so does not blow around in your tank | Ethically and sustainably sourced under license in New Zealand | This sand has a stunning OFF-WHITE sugar color and texture, it brightens up your tank and contrasts well with aquarium plants and goes with any décor | Also great for vivariums and terrariums