That’s what I thought, which is why I’ve been feeding every time. But like I said, my runoff is always high, even on my last run where I basically had one plant given only water except one feed of 2g/gal once for the first month. The runoff was still 1000+ppm. No idea how to explain that, other than nutrient build up in the fabric? Or my own error in measuring (instrument seems fine and consistent).
Hmm, I knew autos were sensitive but I’ve seen people pushing a lot harder then I have and been fine. I wonder if it’s time to put the fabric pots aside and give Airpots or Autopots a try.
Not super old, bought at the beginning of this past summer. Though I’m not sure how long it takes before the lime starts loses its neutralizing efficiency. I have extra dolomitic lime which I’ve added in previous grows but didn’t notice a difference.
www.pthorticulture.com
No sugars, mostly Megacrop, but a bit of sweet Candy, CaliMagic, epsom, and tiger bloom.
Soil ph isn't as big of a concern as your ppms.. That's because you're in pro mix.. Pro mix recommends 5.2-5.8. If you're feeding mix is 550 ppms, then you have to understand or know that the ppms will lower as the plant feeds. The run off should be about the same or lower than your nutrient mix.. If its higher that tells you that the plant is not feeding on the nutrients you are providing. So adding more would not be the correct answer. Again, the highest ppm I've ever used was 500-550 during the last 2 weeks of flower. I would flush (or water with plain 0 ppm water) until the ppms are in range. I'd shoot for 3-400.. Ppm meters are one of the most underrated and overlooked tools. It is the only tool that tells us if our plants are feeding and how much they are feeding. I can't say that you will see any improvement on the purple plant because it's pretty bad off.. They won't regain any color, but it should slow the spread. Your goal for that plant at this point should be to have a few healthy fan leaves left for late flower and harvest.
