Just ordered this for 119, also bought the 4.01, 7.0,1413 ec solution and the storage solution, is this everything i need?
Whats the difference between EC and ppm? I know ppm is parts per million and ec is electro conductivity or something but which one do i measure nutes with?
A note to Organic Growers: An EC meter has fewer applications for a soil grower because many organic nutrients are not electrically charged or are inert. Things like Superthrive or Fish Emulsion, blood meal, rock phosphate or green sand cannot be measured with a meter reliably when they are applied or in runoff. Meters can only measure electrically charged salts in solution. "The solution"... When reporting your PPM in a thread please give the conversion factor your meter uses for example 550 PPM @.7 or give the reading in EC (the EC should be the same meter to meter). \t\t