Yes, Expanded Clay Aggregate – ECA® is an excellent media for Air and Water Filtration. Expanded Clay Aggregate – ECA® offers excellent adsorption properties. It helps and removes harmful gases, volatile organic compounds, and nitrogen compounds. Expanded Clay Aggregate – ECA® also removes atmospheric impurities and pollutants from the air. It’s a perfect filter media for trapping odors. Being an excellent biological filter media and offering a high cation exchange capacity, it’s a preferred media for Air and Water filtration as a filter media. Moreover, Expanded Clay Aggregate – ECA® offers excellent fire resistance, no leaching, excellent drainage filters for earthworks and is reusable and recyclable, not forgetting its 100% Eco-friendly aggregate.