Here you will find spare parts such as rotor units, replacement pumps such as TUNZE Silence pumps, silencers to reduce air intake noise (Aqua Medic) and safety components such as overflow protection for skimmers.
Wooden airstones (e.g. Aqua Medic, Sander) are important for air-operated skimmers whose air is introduced via a membrane pump and not via a needle wheel. These have to be changed regularly if they are clogged. Refill materials such as the ATI Carbo Ex, remove excess CO2 from the sucked in air before it is fed into the skimmer. This prevents the pH value from falling.