About this item 【Pool Chlorine Diffuser】A pool chlorine diffuser is essential to maintain proper maintenance of your removable pool. The distribution of chlorine in the swimming pool or in the spa is done by means of an adjustable control ring in order to release it gradually. The floating chlorine dispenser, it is made with non-corrosive polyvinyl chloride, a durable and safe material. 【How to use the pool chlorine pebble】Chlorine diffuser adjustable, like any other pool pebble diffuser. Depending on the need for chlorine, the slots can be opened more or less to regulate the supply. This removable swimming pool chemical dispenser, better effect. Pool Chlorine Diffuser intended for a 500L pool, this diffuser gently dissolves a chlorine tablet. 【Pill Size】Fits 1" to 3" chlorine tablets. Until it’s full. 8cm pills won’t fit, you have to have them smaller, on half or break them into pieces and weigh on the scale what you need. For such a small pond, it is best to use granulated chlorine