Tetra CO2 Optimat The practical complete CO2 set for lush healthy aquatic plants. Easy way of enriching the aquarium water with CO2. Aquatic plants develop stronger and healthier. The optimum growth of plants leads to an increase in the water’s oxygen content which is important for the fish’s well-being. Prevention of lime deposits on the leaves and glass panes. Consists of Tetra CO2 Depot diffusion pipe with membrane and clamping ring tube suction cups product information. For aquariums containing up to 130 litres.