
Open Grid Bio Filter Column for High Performance Water Cleaning. Eco-Friendly Material: Sourced from natural high-mountain ore, free from harmful organic binders and toxic compounds. Dual Bio-Cultivation: Adsorbs organic waste while providing ideal habitats for diverse beneficial bacteria growth. Advanced Nitrate Conversion: Efficiently transforms nitrites into nitrates through crystallization separation for water purification. Intelligent pH Stabilization: Maintains weakly alkaline pH 7.2 to mitigate pH crash and optimize conversion pathways. Customized Design: Available in customized shapes, colors, and materials including ceramics and clay powder. Rapid Shipping: In-stock items ship within 4 days; customized products delivered within 15 days.