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Lot of 5 Atomic In-Line CO₂ Injectors / Diffusers for Planted Aquariums

Put your planted tank on steroids with a lot of Four used Atomic-style in-line CO₂ injectors for planted freshwater aquariums. Designed to be installed in the return line from a canister filter, where CO₂ is introduced through a fine-pore ceramic membrane and dispersed into the aquarium water as very small bubbles.

Includes five injectors as shown, with assorted fittings/adjustment valves. Suitable for use with pressurized CO₂ systems and external aquarium filtration. Used condition with normal wear and residue from previous aquarium use. When I had them in service, I was using two for two different tanks. When it was time to clean them I would swap one out and put in the backup. Then clean and store them for the next swap. Untested since removal from service; ceramic elements, seals, and fittings should be inspected and cleaned before installation.