Description
AQUARIUM/REEF REVERSE OSMOSIS WATER FILTER SYSTEM WITH MANUAL FLUSH VALVEDI Resin is necessary to reduce Total Dissolved Solids (TDS) to zero and is the last stage of an RO/DI unit. It is unnecessary to use the expensive proprietary DI cartridges that other RO manufacturers sell. Simply buy a refillable DI cartridge and fill with DI resin. You’ll save money and get the same results. The clear cartridge is refillable, so you can save with buying media in bulk, and using the inline cartridge again
