Hayward CL200 in-line chlorinator is a convenient way to control chlorine levels in your pool efficiently and accurately. The CL200 is the easy and economical way to chlorinate your pool water, just fill the corrosion-proof feeder with tricolor tablets or sticks adjust the dial for proper chlorine level and enjoy clean, clear water, saving you time and money. * Convenient way to control chlorine levels in your above-ground pool * Precise dial valve allows you to control the rate of chemical feed * Easy-Lok cover included for safe and convenient access for adding tablets * Unique finger-release catch provides extra security * Simple do-it- yourself instructions