Ro/di 5 stage guide

[deephan]

Im new to tis hobby.im beginner

see the pic after filter tds 0000
when i put in my tank show tds 0002 is the any problem wit my tank or tds meter?


I put in glass n check tds show 0000
but afyer 5 to 10 mint the same glass i check tds 0002..can any one guide me why loke tht

im new to

 

[TexanReefer]

If its a brand new take, it could be residual silicates