I’ve decided to go from a tiny Fluval kit to the big Co2 tank that will split for 3 tanks use. It was an intimidating thought to be dealing with a big can of gas and all the knobs and valves and splitter etc! But the staff walked me thru the whole process and introduced me to this unit which was made for multi tanks use! Make the scary thought just so much better with a knowledgeable staff around! Thanks