Tropica CO2 System Bio 60 days Freshwater Test Kit Suitable for the Fluval FX2

Suitable for the Fluval FX2 (A213) external filter

Antioxidants

Operate in summer at a higher level

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Tropica CO2 System Bio 60 days Freshwater Test Kit Suitable for the Fluval FX2Tropica CO2 System Bio CO2 is the most important nutrient for plants. Without a CO2 supply, the plants will not thrive. CO2 System Bio is a simple solution that adds extra CO2 to the plants in the aquarium. We recommend 20 25 C for the best use of the product. For improved growth of easy and medium plants 60 days CO2 for a low cost Safe to use Easy to refill and recycle Both the BIO system and BIO refill includes enough CO2 for approx. 60 days usage.