Tropica CO2 System Bio is a simple and cost-effective way to continuous supply extra CO2 to your aquatic plants. Easy to refill and recycle, this CO2 system supplies CO2 for approximately 60 days for improved growth of easy and medium-to-keep aquatic plants. Tropica CO2 System Bio set contains a CO2 supplement bottle and activator refill bags for easy startup. We recommend 20-23°C for the best use of this CO2 system.

How to use:

• Pour 300 ml of hot water in the CO2 System Bio bottle (approx. 50 °C)
• Put on the cap back on the bottle (without air nozzle) and shake the bottle vigorously for 60 seconds until the contents are thoroughly mixed
• Leave the bottle at room temperature for a minimum of 24 hours until the content has turned into a solid mass
• At the same time, soak the CO2 Diffuser in clean water

24 hours later:

• Add 1 portion of Activator in 200 ml of lukewarm water (max. 35 °C)
• Leave for 5 minutes and stir until the Activator is dissolved in the water
• Add the solution to the bottle
• Insert the gasket into the air cap and place the cap on the bottle
• Attach the air hose to the bottle and connect the bottle to the CO2 diffuser
• Place the CO2 diffuser in your aquarium
• Wait for CO2 production to start. This usually takes a few hours, depending on the temperature

The set is now installed and with the activator refill bags, you have CO2 for approximately 60 days.