Why using CO² for your aquarium?

*To exterminate vermin.

*To regulate the PH-value.

*Purifying water.

*Stimulates plant growth and avoid the growth of algae.

Which bottles are used for aquaria?

Be sure that you have the specific valve ... 

At CO2-4U, we sell bottles in a content of 1kg, 1.5kg, 2kg, 4kg and 10kg.

Why buying CO² from us?

Our bottles are top quality, this is necessary because of the many back-and forth running of the bottles between the customer and CO2-4U.