Chlorine multi-active JOKER 1kg - 200g pebbles, a single pellet for quick maintenance, simple but above all effective! Enjoy clear, healthy water all season long! Advantages: A single treatment to disinfect, clarify and remove algae from your pool For above-ground or underground pools Easy dosing with a 250g roller pack Features: Multi-active Anti-alga 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.