RO/DI question

[fancy]

hi can anyone tell me how long should i use the filters on a spectrapure 90gpd before i have to replace them should i go by how many gallons i make or should i go by time? thanks in advance.

 

[mbg75]

Sediment and carbon should be changed when you notice a pressure drop on the gauge from when they were newly installed.

Otherwise every 6 months to a year depending how fast the sediment filter discolors

Change the membrane when it no longer drops the TDS within the 2-4% range.

Change the DI when the TDS no longer reads 0

 

[fancy]

thanks so basically it does not matter if im making 10 gallons or 200 gallons its by color or pressure?

 

[mbg75]

By pressure. But if you don't have a baseline on what the pressure was new then just change it when it discolors

 

[fancy]

will do thanks for the help