DYMAX CO2 Starter Kit 0.6LDYMAX CO2 Starter Kit 0. 6L is an all in one kit to supply carbon dioxide to your planted aquarium. Key features include:: Single molded canister High pressure aluminium cylinder Special treated aluminium surface for durability Made of high quality material Specially designed for aquatic use Starter Kit includes: CO2 Diffuser CO2 Regulator CO2 Bubble Counter CO2 Air Tubing CO2 0. 6L Cylinder (empty) CO2 Cylinder Stand Note: The 0. 6L canister does not