Sprudel stone for oxygen enrichment for air pumps which are connected to a 4 or 6 mm air hose.

This sparkling stone or air stone cables the air flow into many small bubbles and properly distributes the oxygen in the water, which leads to better root growth and stronger plants.

Air pumps are never part of the water (can lead to a short circuit)

Technical details:

• 15 cm long
  
• Material: sand & binder
• 75 g