Large capacity 9 lbs. tank will accept chlorine sticks, 1' or 3' tablets. The chlorinator is fully adjustable so you can regulate the speed at which the tablets dissolve, depending on your pool's chlorine demand. This unit is constructed of heavy-duty resin and includes the unions and pipe fittings necessary to connect to 1-1/2" plumbing. The unit is designed to be installed in-line.