[Pool Chlorine Diffuser] A pool chlorine diffuser is essential to maintain proper maintenance of your removable pool. The distribution of chlorine in the 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 of non- polyvinyl chloride, a durable and safe material [How to use chlorine pool roller] Chlorine adjustable diffuser, like any other diffuser roller pool. Depending on the need for chlorine, the slots can be opened to regulate the supply. This distributor of chemicals for removable pools, better effect [Size ] Suitable for chlorine tablets from 1inch to 3inch. Until it's full. The 8 cm do not come in, you have to have them smaller, on half or break them into pieces and weigh on the scales what you need. For such a small pond, it is best to use granular chlorine dissolved in water. A contains a lot of chlorine. It usually takes about 10 grams every two or three days [Pool maintenance kits] Use chlorine in the pool, but you must have a chlorine counter, because if you open it too much, it can be too chlorinated, and if you open it too little, it becomes poor and the water is green [Easy to put ] In addition to adjusting the dosage, this dispenser is useful and very compact size: Height 180mm, diameter 175mm, bottom diameter 85mm Material: plastic colour: As shown Package Contents: 4 x Pool Dispenser (Different batches of objects may be lighter in color, which does not affect the use.) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.