Hydroponics Xpress offers affordable Air Sponge to eliminate microscopic pollutants and offensive odours suspended in the air. It costs at only $21.90 and lasts for 4 to 6 weeks. Approach us to know more about our services.Hydroponics Xpress offers affordable Air Sponge to eliminate microscopic pollutants and offensive odours suspended in the air. It costs at only $21.90 and lasts for 4 to 6 weeks. Approach us to know more about our services....Show More