Loose the cap (upper part) and fill up the reservoir with clear water up to 2/3 full. Fasten the cap firmly and secure the CO2 pipe to inlet and out let correctly with the screw nuts.
Product is good, works as advertised.
Easy to assemble, check valve in built and price also not to much high as compare to other product in market.
This is a great product! Spring action and 0 leakagr
Great product & Reginoble price
nice and would recomend