Tropica CO2 System Bio 60 days Options:CO2 Bio Kit A single 100ml bottle will

A single 100ml bottle will treat 4000 litres of tap water

Evolution Aqua Pond Filter Nexus 220 Ponds up to 18000L

Moderate - aggressive

Designed to hold enough food for up to 60 feeds

but other species of crab or small fish are at risk of being attacked or eaten

Tropica CO2 System Bio 60 days Options:CO2 Bio Kit A single 100ml bottle willTropica 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.