Fluval BIO CO2 Pro System 250L superworms Easy-to-adjust temperature dial sets temperature

Easy-to-adjust temperature dial sets temperature 1ºF with every click

Magnet makes it easy to clean the inside of the aquariums from the outside

5 US gal (10531) and the Fluval FLEX Aquarium Kit - 57 L/15 US gal (15006)

Net Weight 0

or any food you want to dose into your tank but don’t want to see go right over the overflow

Fluval BIO CO2 Pro System 250L superworms Easy-to-adjust temperature dial sets temperatureThe ALL NEW Fluval Bio CO2 Pro system combines the safety of biological carbon dioxide production with the convenience of pressurized delivery. Offering simplicity and unparalleled performance in an easy to use format, Bio CO2 delivers reliable and controllable CO2 through the naturally occurring fermentation process. With safe, low pressure operation, it is the most secure, simple, and environmentally sustainable aquarium CO2 delivery system