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

Nutrient strength should be 800-1000TDS @ 4 weeks. What type of hydro r u using? General Hydroponics recomends this level.

yeah, thanks for the reply,ive sorted it know m8, cheers :)