Thread: Get a harvest every 2 weeks
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Old 05-11-2008, 12:48 PM
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Mr.Ganja
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Originally Posted by cmak40 View Post
al what is EC compared to ppm?
EC (electrical conductivity) is an arbitrary number related to the electrical resistance of a nutrient solution, as opposed to PPM (parts per million), which gives you a more realistic idea of the actual content of ionic compounds (salts of certain nutrient elements such as N, P & K) in an aqueous solution.

1.0EC = 700ppm (usually).
Last edited by Al B. Fuct; 05-11-2008 at 01:15 PM. Reason: detail
 
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