Specifications: ‣ Product Type: Nitrate Removal Sponge ‣ Size: Medium ‣ Active Ingredients: Nitrate-reducing bacteria embedded in foam ‣ Compatibility: Fits Juwel filter systems (Medium model) Key Features: ‣ Efficient Nitrate Control: Reduces nitrate, supporting clearer and healthier water. ‣ Improves Water Quality: Helps prevent algae growth and keeps water conditions stable. ‣ Durable and Effective: Long-lasting sponge for consistent nitrate reduction.