ELCouz said:
Yes !!!
What could be done to prevent the P excess in the future?
I suspect the excess P coming from the regular water (phosphoric pH down when there is no nutes) after many watering...
Alternate between what? Sulfuric,Nitric, acetic acid?
The pH down for pools are just salt (sodium bisulfate) I don't think that's gonna help in the soil.
Excess P is almost always caused by your nutrient. Choose a better one. But stay away from excess P in your PH down, also. Somebody suggested citric acid. Might be a good idea. If you want to grow conventional, CNS17 Grow, or Dyna-Grow Foliage. Both are 3-1-2, are single part formulas. No mixing, no changing up in the grow cycle. I'm an organic grower, but I'm not a tool - either of those are great for your purpose. I have used the CNS17 for specific purposes, and grown some of my best plants with it.
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As a bonus, let me just add, that with my water, the CNS17 grow PH comes out optimal, with no buffering. Just in case that is worth something to you...
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lek said:
it's not calcium deficiency symptoms. LOL
Hey, Professor Amino... Plants in pots need calcium, whether they are presently deficient, or not. Even more so, after a flush. So a ready source of calcium has been suggested.
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As I'm sure you know, a plant won't properly take up nitrogen, where calcium is deficient, or locked up. I'm sure that you were about to say that, right after a hit and run comment, or two.