I want to know if anybody could tell me if this is a zinc deficiency making the tips of my leaves turn brown, my plant is 39 days old it's in Fox Farm ocean Forest mixed with Fox Farm Happy Frog with pearl light and earthworm castings I feed with r.o. with molasses almost every watering pH'd at 6.2
Any tips?
No, this is not zinc deficiency.
The burn is most likely from low food, leading to imbalances as the plant uptakes certain elements, and is having hard time with others that have built, and caused some burning, or the burns are just old shit that happened before from overfeeding.
Now, this plant is hungry for proper balanced nutrition.
You did not say how much molasses you use in those waterings, if it's like a TBSP/gal, or tsp/L.. a big dose like that at every watering, then you fucked up, if tiny tiny amount where water hardly turns color, not dark, just amber'ish, then this shouldn't have caused your issues. This plant is lacking proper balanced nutrition at this time.
Something along these lines, somethng like this has happened, this is what I think.
Also, with the soil you are using, pH 6.2 is not doing you any favors, keep it up around 6.5 and above.