Sintered glass bio-rings are high-porosity filter media that provide an exceptionally large surface area for beneficial bacteria to colonize, leading to highly efficient biological filtration and improved water quality in aquariums and ponds. Made from high-quality minerals, they establish a stable environment for nitrifying bacteria that rapidly process ammonia and nitrites, reduce algae by breaking down organic matter, and remain neutral in pH without altering water parameters.

Made with the high quality glass, these glass gravels never fade colors and can resist years of use. Gems are guarantee non-toxic lead-free which makes them perfect for aquarium decor. Tumbled finished they look nice and have no any sharp edges. These glass gems have a glossy finish to them, giving them a bit of sparkle.

Made with the high quality glass, these glass gravels never fade colors and can resist years of use. Gems are guarantee non-toxic lead-free which makes them perfect for aquarium decor. Tumbled finished they look nice and have no any sharp edges. These glass gems have a glossy finish to them, giving them a bit of sparkle.