I'd say you were throwing out a reasonable explanation to this odd problem. Plant doesn't look right. And the way I see it, this is some new strain bomb diggety or he's got a problem with this plant. My 2¢ is that maybe he should at least give it a little more thought instead of hearing what he wants to hear. Maybe just TRY flushing a little. Or add SuperThrive.
Flushing can cause more problems than the one your
attempting to correct...Simply water it out with pHed water.
Superthrive is snake oil!!! As close to useless as you can get for Cannabis. OH WAIT,,,you like AN too don't you?
What makes you think that because it's only happening to one plant that this is not a molybdenum deficiency? All plants are a little bit different, I wouldn't expect both strains he's running to have the same symptoms, because they are two different strains. Not all strains feed the same... even with same strains, different phenos can feed differently.. some plants are picky, some are not.
FYI.. an average molybdenum content of 2.0 ppm means that there is approximately 0.2 ppm immediately available to the plant on average. The average MO content in most grow/bloom formulas is around 0.0009%... it will have the lowest nutrient content of all nutrients in the formula. A molybdenum deficiency usually shows up in the older to middle aged leaves before moving on to new growth. Molybdenum deficiencies are fairly common in a some of the citrus and vegetables we eat everyday, but it's a rare occurrence in cannabis and it's usually mistaken for a nitrogen deficiency.
Any micro nutrient def is rather rare......98% of all nutrients for sale contain them in amounts that cover your needs. If in soil - then it's even rarer! I have NEVER, in decades of growing, had a micro nutrient issue in Cannabis!...I can force it...but why?
If it was one, it would have to be directly related to what he grows in and what he feeds.....pH could be a contributing factor.....
It's not a Mo problem....
BTW, yes plants can differ in
how they feed, (slow vs fast) but, not in
what they feed or the ratio's they require !
This is another old an beaten to death doper myth.....
Dude - plants are fine!
Doc