EOA Alloy CO2 System 2L is a complete system (ready to use) for supplying CO2 into planted aquarium. Includes a cylinder, regulator with soleniod.

Come with everything that you need for a CO2 System

Package

ANS 2L CO2 Alloy Cylinder

ISTA I-533 Regulator w/ Soleniod

UP Aqua Bubble Counter

Black CO2 Tube 3 meter

NEO CO2 Brown U Type Mini

ANS Brass Check Valve 1PCS