Solar air plus for the free ventilation of a garden pond with battery boxsolar air plus provides free pond ventilation the powerful solar module and the battery box guarantee ventilation even after the sun has gone down once the battery in the battery box has been charged the air pump will turn on automatically the delivery is carried out ready for use with a solar module battery box with 6 v1 200 mah air pump 2 m air hose and rock fountain the solar module can be arranged optimally f