Can someone explain to me Total Disolved Solids, Parts per Million, and EC? I know readings are different for different nutrients/rez. sizes etc. but is there a general rule of thumb what should be what?
WeedTree's Reviewed by WeedTree's on . Explain to me TDS, PPM, EC... Can someone explain to me Total Disolved Solids, Parts per Million, and EC? I know readings are different for different nutrients/rez. sizes etc. but is there a general rule of thumb what should be what? Rating: 5