Quote:
Originally Posted by joxter
if i went over 1200 on most the strains i have grown in coco it burned them pretty good. you haven't had much burning with 1400?? how often are you watering them with that 1400 solution? maybe it was just the strains i had, but 1400 seems just a bit high.
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1400ppm is equal to 2.0 ec.
I water with the 1400ppm solution for around a week, usually at the mid-flower point. Every seed grow will get a 1400ppm peak feed, whether they can take it or not. I then use the information from the seed grow to better grow the clones coming through next. If the 2.0ec peak was too high for mommy, then there's a good chance it will be too high for her clones too.
Here's my typical flowering feed run down... based on a 9 week flower and measured in EC as that is more consistent than ppm, ppm is merely guesswork, and is converted from EC anyway.
1.2
1.4
1.6
1.8
2.0
1.8
1.6
flush
Often though I will only need to flush for 2-3 days.