BCN Critical XXL grow journal by Goenndalf

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Harmarcommentedweek 94 years ago

Hi! The second photo shows magnesium blockage. Moreover, there are "claws", which means there was an overdose of nitrogen and nitrogen blocked access to magnesium. A friend recently had the same problem. Sprayed with magnesium sulfate three times, every three days, the problem went away. Magnesium sulfate is sold in every pharmacy and costs a penny. Good luck!✌️

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Goenndalfcommented4 years ago

@Harmar, thanks for your helpful comments👍 I bought some magnesium sulfate at my local pharmacy yesterday and applied it as foliar spray (2% solution clocking in at 600ppm) to the fan leaves. I also added a tiny amount of dish soap to lower the surface tension of the spray. I also got my hands on an EC-tester which showed that my feeding solution for the last 3 weeks had around 1200ppm😳. Considering it is a 8-5-8 fertilizer, a magnesium lockout due to nitrogen or potassium excess makes perfect sense.😏

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autoseedsmancommentedweek 94 years ago

What a lovely looking canopy 😍

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Goenndalfcommented4 years ago

@autoseedsman, thanks for your kind words😀

PurposeGroundcommentedweek 84 years ago

Agree. But I note that we should not forget about mg. To do this, you will need 1 ml/l of pharmacy solution-it is safe (if the fertilizer is not enough mg). Delete urgently within a few days N. Macro photo 1-absence of P. You can get a p!block in the future.!! N is necessary for flowering, but very little! better without it at all at this altitude!!! :) They grow well, like my AK-47 10 years ago:) give an additional complex fertilizer for flowering. I give potassium monophosphate in addition, when there is not enough complex fertilizer (very popular in Russia):) ie I make 30-50-100% (starting from 30% and higher) of the required complex fertilizer and observe how the plant consumes phosphorus. This is how I adapt to any complex during flowering. Good luck, bro!

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Goenndalfcommented4 years ago

@PurposeGround, Thanks for your comment and bringing mg (You mean magnesium i suppose?) to my attention. Today, while i was inspecting the canopy from the underside, i spotted 3 upper fan leaves which showed little dark spots all over them while looking through them against the light. I didn´t notice it beforehand because these spots are hardly to see normaly. They show as faint "rusty" (For lack of a better term) spots on the upper side of the leaf. I read rusty spots can come from rust fungus (Ruling that out, cause there are no spores to rub off) or from Mg and CA deficiency. My fertilizer has 0,2% MgO in it. I also see a light clawing up of many of the other upper leaves. Maybe a lockout due to nitrogen toxicity? I will follow up with another question and pictures if time allows it.

heizencommentedweek 104 years ago

Nice grow mate, plants are looking good, keep it up, imma follow this one upclose.

First Grow: BCN Critical XXL

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