8 shops will let you alter air waft for 8 fish tanks.
Inlet connector Diameter: 10mm and the 8 OUTPUT Diameter measure 5mm.
Manually keep watch over the waft of necessary O2 or switch an air pump on or off.
Product of Chromium Copper subject matter, air will never leak out. Now not appropriate for CO2 system.
Weighs 0.2kg, Measures 16 x 6 x0.5cm.