Pollen Glass Large, Diffuser, 20 mm

The Pollen Glass Large with a diameter of 30 mm is available for larger tanks to fulfill the CO₂ demand of your aquarium. We also recommend the Pollen Glas Large Series for aquaria with a high stock of plants like Riccia fluitans, which needs large amounts of CO₂ to grow healthily. The U-shaped glass tube is almost invisble and prevents congestions. Hand-made all-glass diffuser, designed for long-term use.

Recommended for an aquarium size of approx. 60 - 75 cm