How often to exchange the Deionization Water Filter Cartridge?

hsp · Jan 28, 2024

I have a 75 GPD Geekpure 5-stage RO system and have recently replaced my 6th stage (Alkaline Mineral pH+ Remineralization Filter) with an Inline Deionization DI Replacement Water Filter Cartridge in preparation for my new tank (RED SEA Reefer Max G2+ 300).
While I will monitor the water quality with my TDS meter, what is the expected period these DI filters will last? I googled this and got
"Filters used in commercial settings should be changed every 4 to 6 months. Filters in residential settings should be changed every 6 to 12 months. Reverse osmosis, membranes, and additional alkalisers only need to be changed ever 2 years or 4 years, respectively."
as well as
"Deionization (DI) resin lifespan typically lasts 5 to 10 years."

I plan weekly 30 litres for WC plus our regular home use of a few litres each day.

How often are you changing?

Devisissy · Jan 28, 2024

hsp said:
I have a 75 GPD Geekpure 5-stage RO system and have recently replaced my 6th stage (Alkaline Mineral pH+ Remineralization Filter) with an Inline Deionization DI Replacement Water Filter Cartridge in preparation for my new tank (RED SEA Reefer Max G2+ 300).
While I will monitor the water quality with my TDS meter, what is the expected period these DI filters will last? I googled this and got
"Filters used in commercial settings should be changed every 4 to 6 months. Filters in residential settings should be changed every 6 to 12 months. Reverse osmosis, membranes, and additional alkalisers only need to be changed ever 2 years or 4 years, respectively."
as well as
"Deionization (DI) resin lifespan typically lasts 5 to 10 years."

I plan weekly 30 litres for WC plus our regular home use of a few litres each day.

How often are you changing?

This does not sound like an aquarium setup more a drinking water set up.