Unscrew the cartridge cap and remove the foam ring
Pour the new DI resin into the cartridge and pack it down as hard as possible
Tapping the cartridge on a table will help settle the resin
Continue to add resin until level with the top and you are satisfied that no more resin will fit
Replace the foam ring inside the screw cap and on the cap
Replace the cartridge to the RO system making sure the arrow on the cartridge points up
Special Note: Properly filling a DI cartridge will ensure optimal performance by preventing RO water from channeling through DI Resin.
If you have any other questions or need further help contact our reefing experts at 763-432-9691.