Mipcase 8 Pcs Carbon Dioxide CO2 Glass Tube CO2 Refining Tube CO2 Refiner Refiner U- Shaped

AQUARIUM SUPPLY– U shape designed, more convenient than normal tube. PRACTICAL TUBE CONNECTOR– Simple appearance and compact size, will not take up much fish tank space. U CO2 GLASS TUBE– Smooth surface design, comfortable hand feeling, safe to install. CO2 DIFFUSER ACCESSORIES– Keep the aeration pipe passing through the wall of the fish tank from being squashed. CO2 DIFFUSER TUBE– Mount your U Tube over the rim of your aquarium in the desired location.