Optimum RODI Filter Sizes

[Randy Holmes-Farley Verified Community Expert]

How


How do I figure out my TDS? Thanks

You measure it with a TDS meter (conductivity meter) of some sort.

 

[Saltyanimals]

My whole house is just a sediment filter so it does not affect the carbon filters but I rarely change to rodi sediment filter anthers are changed as needed based on gallons for the carbon and TDS for membrane and di

Thanks. Looks like you also don't need to change your sediment filter with the whole house doing the same work. Logically this made sense to me, but it's almost surreal to have my rodi sediment stay 99% as white as the day I installed over the years. Well Black Friday is here so I'm changing for the hell of it. The whole house + water softener pre filters really help the RODIs for those that are considering putting your rodi downstream of these systems.