Long lasting chlorine JOKER - 5kg, ideal to stabilize the water of your swimming pool and enjoy a completely disinfected water. Good bye bacteria and hello summer with a healthy pool! Advantages: A single treatment to disinfect the water of your pool Easy dosing with a 250g roller pack Characteristics: Recommended dosage: 1 roll per week for a pool of 20 to 30m3 Disinfectant Rollers: 250g Weight: 5kg Packaging: Delivered in its original packaging Caution: Use pool care products with care. Before use, read the label and product information.