During the first weeks of veg, What is the ideal PPM, Running 1 600watt airtube with flood and drain system. Also using Advanced Nutrients Sensi A & B. Last reading at feeding wednesday was 1240.......And the little girl grew one inch in 3 days. Thanks
Dont worry about PPM... If someone tells you PPM without the CF then you have no point of reference as to what they are talking about. Confused? Good...
Now, EC which is a measure of PPM is consistant when discussing measurements with people.
However, neither of these things are important to you when figuring out what works for you.
Start with 1/2 the recommended dose on the back of the manufacturers product and add more if you see deficiencies.
Ultimately, nobody can tell you what the *perfect* ppm is for you due to variable nutrient uptake due to lighting, temperature, size of resevoir, etc... If it was that easy the PPM values would be stickied at the top of the forum.