How to use a TDS meter

insomnia65

Well-Known Member
That can depend on a few things, genetics, your grow media. Can you tell us these.are please, also a photo might help. What PPM have you been using up to now

Is it an auto or a photo.
 

Nugro21

Member
Gg#4, ed stone recipe 420, cal mag, water PH 6.3 and micros and some myco. Autiflower. At work can't post pic.
 
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