Best choice for ro filter replacement?

[Kammetal]

I have a a 6 stage RO unit

1 sediment
2x carbons block
Resin

2x150gpd membranes

I need to replace them whats the best route to go with?

 

[powdertang05]

I just buy them from BRS. They seem to be the fastest and easiest to get.

 

[jwshiver]

Check out the SpectraPure MaxCap Super DI cartridge for the first DI stage followed by a SpectraPure SilicaBuster DI cartridge. I was buying bulk DI and started having silica problems (Triton Test). After some research I found that DI resin has about a 6 month shelf life. I've had no problems with silica after switching to these cartridges.