Help: RO/DI question, TDS high

[Bolivian Reefer]

My Max Cap Spectra pure was working well for 2 months. I then realized that my outlet TDS meter was reading around 60 -70. I changed the first two RO filters and it got worse, now the inlet is around 244 and the outlet is 123. What should I try next? change my DI filters?

Thanks

 

[Bolivian Reefer]

I measured the phosphate of the .123 TDS water with the Hanna checker and the reading was 0.16 ppm

 

[Bolivian Reefer]

Anyone?

 

[layer3switchguy]

Hi. If your TDS reading after coming out of the RO membrane is reading 123ppm, something is wrong with the RO membrane itself. It should have anywhere between a 94%-98% rejection rate, so if the water going in was reading 244, your output after the membrane should be between 5-15 PPM approx. The DI resin should clean that up to zero.

Cheers,
L3