Astral Pool Claritab 5 x 20 g Tablets - Highly Concentrated Flocculation Tablet with Double Effect Coagulation & Flocculation Water Filtration Slow Dissolving for Use in Skimmer BasketDouble coated tables: Claritab offers a double effect as a coagulation and flocculant. Efficient water filtration technology: developed for efficient filtration with sand or filter glass systems. Removes turbidity and impurities from the water. Reduces the content of soluble aluminium and reduces the consumption of disinfectants. Long lasting solution: slowly dissolving tablets ensure a continuous effect over approx. 8 hours. Easy to use: simply place