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Any ideas what cause this??

HeavyHead
HeavyHeadstarted grow question 4y ago
Deficiency ID help? Was away for a couple days and came back to my veg tent like this
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Organoman
Organomananswered grow question 4y ago
Nutrient burn.
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LostWorldGenetics
LostWorldGeneticsanswered grow question 4y ago
Hi mate, Your room parameters are 25°C and 40% RH, but the good range for humidity according VPD (Vapour Pressure Deficit) is : 75-85%, at this stage of growing. I guess the plant are suffering of dry air, especially at this stage of veg. Hope this helps
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JUNGLE_B4RNS
JUNGLE_B4RNSanswered grow question 4y ago
This not a deficiency. It’s the EC of the soil becoming to high certainty because you’re not watering enough and getting no drain from the bottom of the pot. NaCl is starting to build up in the soil.
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HighRoller909
HighRoller909answered grow question 4y ago
Did anyone water them when you were away? they were suffering from heat apparently but there is also a salt build up in your pots. I can only guess that someone watered with inadequate amount of water,without runoff. If not, this message will self destruct.
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