AZOO Battery Air Pump Ideal for fish transportation and for emergencies such as power failure. Includes: air tube and air stone Requires 2 x "D" Size Batteries (not included)
Plastic check valve for water plant aquariums. The check valve is usually placed between the CO2 regulator and the bubble to prevent water from back-flowing to the regulator.
Extension for all Hydra Aquatics water flow accelerators. 4 Inch section with 4 individual segments.