top grade di resin 500ml ro filter refill pack

Top grade Di Resin Virgin mixed bed resin allows for total de-ionisation (polishing the water) of your reverse osmosis water enabling you to achieve a Total Dissolved Solids (TDS) of zero ppm. Our DI Resin will remove 99.9%+ of any elements and organics that have made their way through the RO membrane, leading to pure uncontaminated water, which is essential for keeping a healthy marine and reef aquarium. The tds that is required for marine aquariums is zero not always possible with out the use of di resin ,change the resin once readings are above zero on your tds meter