RO/DI TDS WDYT??

[hobogato]

Your description above says that the carbon block comes after the membrane. The carbon block is the key to removing chlorine which will toast the RO membrane and the carbon block will also remove some bigger ions like calcium etc. that can clog the membrane. By having it routed so the carbon is after the membrane you really have bypassed the safety mechanisms for the membrane and it is probably toast.

i did not mention this because mike said he had two carbon cartidges before the membrane and the carbon block after. if it were me, i would do what you said and put the carbon block before the membrane as well.

Membranes run about $80-100 as mentioned above.

buckeye field supply has filmtec membranes - 100gpd for around $45.