can ne1 please tell me what my tds reading should be,ive just got a meter and its reading 168,dont know if thats right for 4 week old plants.

cheers guys
sc0usa Reviewed by sc0usa on . tds can ne1 please tell me what my tds reading should be,ive just got a meter and its reading 168,dont know if thats right for 4 week old plants. cheers guys Rating: 5