Clever accessory for any air stone: float with kink protection for attaching an air hose with airstone Easy installation: pull the air hose by kink protection, positioning in the pond, for 6 mm air hose from PondOxi set, float + antique pink No contact of the lower layers of water - no complete mixing of the water Secure hold thanks to hose holder, positioning the airflow at the desired height Box contents: 1 x JBl ventilation kit, Pond Oxi-Set 28013, includes air pump, 10 m air hose, air stone, float with hose holder