ISTA External CO2 Reactor – The best way to diffuse CO2 into your planted tank or riparium. High resolution rate with a great diffusing effect. For 12/16mm Filter hose For 4/6mm CO2 tube Description: Patented impeller design, completely crushes CO2 bubbles. Provides the best CO2 dissolution rate. Compact size, suitable for external or internal tank installations. Durable material for preventing deformation and acid resistant. Easy to clean and simple to maintain.
