The easiest way for your essential pool and hot tub maintenance Suds-Online 20g Multifunctional chlorine tablets are by far the easiest way to maintain healthy water in your pool or hot tub. These tablets are designed to be used in your suds-online chlorine floating dispenser or a chlorine feeder you have on your pool or hot tub. Its a great wat to maintain your chlorine levels if have a busy lifestyle or fancy a few days away! 1. Easily maintain a safe bathing environment. 2. Slow release tablets over 3-14 days