RO/DI coming out at tap water TDS....

[FluffySackson]

My RODI is usually about 0-4 TDS but suddenly it's 350 TDS........ I used my TDS meter to test all my freshwater tap water tanks, so could it be because I didn't wash the water off of the TDS meter? My RO/DI unit is only a month old.

 

[ApexMonstah]

Does your RO/DI unit come with a TDS meter? seems you are using a portable TDS meter? It's possible for the meter to show high TDS from build up if it is not rinsed in RO water before testing.

 

[FluffySackson]

Thanks man! I washed my TDS meter with the RODI water and now my tds is coming out normal! (turns out I forgot to wash it off again)

 

[ApexMonstah]

Great! Glad it worked. I remembered that use to happen when testing TDS for dwarf shrimp tanks.