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What is this symptom?

Frost
Froststarted grow question 4 years ago
Have a symptom of something that I could not understand. Started with yellow color from the edge of leaves, suddenly become a brown color and top of the leaves dried too fast like burned. Flushed them but it does not resolve.seems like magnesium def. but i am not sure, any ideas?
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Week 6
Leaves. Tips - Die
Leaves. Color - Dark-brown
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Esoteric_growing
Esoteric_growinganswered grow question 4 years ago
That’s 100% nutrient burn, look at the burnt tips and in one pic the leaf tip is pointing up both are signs of too much nutrients. As mentioned already all mix has enough feed for 2-5 weeks and 2ml per litre A and B is waaaay too much for them. I don’t see a EC level mentioned in the diary but a plant that size I would be around 1.3-1.4EC, if you don’t have a EC meter cut the nutrients in half and observe, if the plant starts to go a lighter green then you like rise the strength back up in increments until you find the sweet spot. I tend to rise the strength of my feed until I see a slight tip burn/sign of over feeding and then back off a touch, that way I know I am giving them the optimum. Happy growing buddy👍
TheBudWhisperer
TheBudWhispereranswered grow question 4 years ago
Firstly, this is a textbook, beautiful mainline you have going here👍. As far as previous answers are concerned, there may be some merit to the suggestion that you’re over feeding nutrients. Regardless of the soil mix you’re using however (and I have no experience with BioBizz’ mediums) I’d be surprised if there’s enough residual nutrient in the medium to keep the plant happy after the 5th week or so of veg. If you’re feeding with every watering however, that may not be the case and they indeed may be getting too much. If you’re already staggering nute feeds every other watering then I would be more inclined to suggest that this is a very small, localized problem that may actually clear itself up. The tips are only slightly yellow so this isn’t necessarily a sign of burn and the issue appears to only be presenting on one leaf. If you’re really worried about it then I would either stagger your feedings every 3rd watering or reduce the overall mix ratio by half. If it were me, I wouldn’t necessarily change anything just yet or worry too much about this at all. I’d just keep an eye on it for the next week or so to see if it advances at all and then re-assess. Could just be a wonky leaf and that’s a common occurrence. (Ain’t calmag either I would say as your already well supplemented there). Good luck!
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Weezy90
Weezy90answered grow question 4 years ago
Hi ! Je planten zijn uit balans door de voedingsstoffen. Ze zitten in Biobizz All Mix, hierin zitten voedingsstoffen waarmee je 6 weken verder kan. Je moet intussen geen extra voeding bijgeven. Aangezien je nu ook Bloom voeding geeft en geen Grow voeding, krijgt hij nu niet wat hij nodig heeft. Voor deze kweek koop je nu Growvoeding en geef je deze tot aan de bloei. Dit zou het moeten oplossen. Bij volgende kweken kies je voor Biobizz Light Mix, hiermee verbrand je jouw planten niet. Hierin kan jouw zaailing perfect groeien. Je kan hierbij zelf je voedingsstoffen toevoegen, vanaf week 2 rustig beginnen met Growvoeding. Staat hij mooi in bloei, schakel je over naar Bloomvoeding en eventuele boosters die je wenst. Veel succes en blijf groeien!👌🌱
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Pierrougarou21
Pierrougarou21answered grow question 4 years ago
Bonjour Gel , c est un excès de nutriments, apres etude de ton journal , je vois que donnes Ph perfect Sensi Bloom alors que tes filles sont en croissances. c est peut etre une erreur lors du remplissages de ton journal ??? Si ce n est pas ça les brûlures viennent de là. bonne culture
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