Quote Originally Posted by Daddynobucks
General Hydroponics Flora Nutrient PPM Calculator

Daddy
ps, all meters measure EC convert to ppm or TDS by multipling with a factor of either 0.50, 0.65, 0.68 , 0.70, depending on the manufacturer, tis why if everyone used EC for the standard we would ALL be on the same page. kapesh
daddy sorry for jumping in asking a question, in my areo system I have roots flowing into my res is that ok.:stoned: