Stefani Decolorizing Candle (Dual Action) Action 1: Filtration - The candle is crafted from ceramic material with a microporous wall that filters water by gravity without the addition of chemicals. It reduces impurities and retains solid particles, ensuring healthy water free from particles. Action 2: Decolorization - Inside the candle, there is granular activated carbon (GAC), a plant-based product derived from coconut shells and used worldwide in water purification systems. It effectively reduces odors, tastes, and chlorine content in the water. Classification C (5 to 15 microns) All Stefani candles are compatible with most gravity water filters, providing a safe and efficient way to ensure healthy water. Specifications: Each candle filters between 0.5 to 3 liters of water per hour. Effective for up to 500 liters or 6 months of use. Important: Discard the first 12 liters of filtered water per candle before use. For example, with 2 candles, discard 24 liters. Experience the safest and most efficient way to provide healthy water with Stefani decolorizing candles.