Aqua Safe Question

[dockrat]

How many of you guys with aqua safe RODI use the carbon filter after the DI cartridge... I have a new unit and the carbon filter seems to be riseing my TDS, I read 0 TDS after the DI cartridge and 6 TDS after the carbon... It might just be the fact that its a new carbon filter needs to be flushed for a while to get out all the dust particles... Is this Carbon filter necessary for aquarium use only ?

Thanks Kris