The eheim air diffuser has been specially designed to degrade air in very small bubbles. This ensures optimal absorption of oxygen into the aquarium.
Control the flow of vital CO2 or oxygen from your pond aerator or aquarium air pump with this handy air flow controller. Available in 1/2/3/4/5/6/12/18 way. Fit 4mm/6mm standard aquarium air line/tubing.
The dennerle hose guide is an elegant means of installing the co2 hose without kinking. For all pipes with 6 mm external diameter.