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Yellow/brown marks
w33d_zm00k3rstarted grow question 2 years ago
My plants are becoming more yellow and now also showing some brown/yellow marks. I'm afraid it’s because I may have splashed some water containing a little bit of CalMag on them one time, not knowing better. Might that be the issue here? And most importantly, what should I do?
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m0useanswered grow question 2 years ago
It does look like they have had a bit of burn from some water droplets.
are you balancing out the waters ph as well? or just adding in calmg to its water?
Your diary says the lamps distance to the plants is 10cm, or just under 4 inches.
That is way to close. If it's meant to be 10 inches that's also a little close for seedlings sometimes.
I would aim for anywhere between 25-35" for sprouts on a 600w led if that the true wattage its pulling. Some of them also have dimmers.
Some of this could be light stress but I'd like to confirm the lighting distance before thinking about that.
If you light manufacture has a PPFD map you can reference then use it as a guide line and adjust from there.
Good Luck and Happy Growing!
Ezzjaybruhanswered grow question 2 years ago
Hey there..
Tried looking thru your diary at the specific soil used but this kinda looks like some over feeding.. autos don’t need too much nutrients
If you’re feeding extra nutrients I’d stop.. the cal mag may have left a few little spots but it’s nothing to worry about you can apply cal mag like that anyhow.
Read some on your plants and I have to say doing mainlining on an auto with little experience is quite risky.
If you’re doing it just to experiment and don’t care the results that’s awesome and I say go for it.. but if you want decent yields and whatnot I’d recommend just topping and LST or maybe just LST on its own.. mainlining/manifolding is better saved for photoperiods in my opinion. Good luck man!
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