my tap water also 60+ TDS.. i run mine through a 1 carbon + 2 resin in a crystal pro unit.. resin carbon bought from madpetz since the original was used up.. it took me probably only 1 hour or so to make 30L of water..and yes my TDS is 0. Im guessing you insert your cartridge wrongly.. or try to run it faster see what happens.
Bro,
You mean can use the ZeRO 10" Granular Activated Carbon Filter Cartridge from Madpetz in the Crystal Pro RODI unit?