4 Liter DI Resin Mixed Bed Color Changing for RO/DI Systems, Optimal TDS Reduction, Color Changing Easy Monitoring, Ideal for Aquariums, Ensures Superior Water Quality(1 Pcs, 6.88 Lbs)

4 Liter DI Resin Mixed Bed Color Changing for RO/DI Systems, Optimal TDS Reduction, Color Changing Easy Monitoring, Ideal for Aquariums, Ensures Superior Water Quality(1 Pcs, 6.88 Lbs)