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52 days since seed in soil. Something to worry about? How much PPFD?

BigBuddy91
BigBuddy91started grow question 3mo ago
Something to worry about? Some yellow / white with brown spots on a few leafs. Mostly upper. Six Shooter Auto, 52 days since seed in soil. How does it looks to you? 9 liter pots get 2L water with nutes every 3-4 days (when pot feels light) + 5 gallon 3 liter water + runoff.
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CaliBoyTF
CaliBoyTFanswered grow question 3mo ago
My friend, your plants are showing symptoms of overwatering (droopy, claw-like, and starting to curl leaves). If the pot is 9L, water with a maximum of 1.5L to maintain the optimal water/oxygen ratio at the root. This also prevents leaching of the substrate. It is not necessary to let it drain; this is a bad practice spread by unscientific rumors. That should only be done in case of over-fertilization, and your plants are losing nutrients because of this, as they are starting to yellow if you look closely. Try watering every 3 days with 1.5L. Water slowly, slowly moistening the medium well. This will improve the quality of your roots and harvest. Add only a little (very little) "grow" type fertilizer in the next watering, providing the plants with the nitrogen you are draining from the substrate. ​I hope this helps you in this and future grows.
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CaliBoyTF
CaliBoyTFanswered grow question 3mo ago
Sorry, I forgot: it's a pest. Here in Europe, we call it a "leaf miner."
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Ultraviolet
Ultravioletanswered grow question 3mo ago
Plant is far too lime check ph, no point fixing a deficiency during potential ph skew. Veins of leaf and stem. Red/purple, oxygenation of the medium is a problem. Tips indicate ec of soil around 1.6ms/cm almost at limit. Tips drooping tells me water/pressure issue, Likely iron us messed up from a combination of high ph and iron becoming toxic from the oversaturated medium. If ph is above 7 there will be no hydrogen either. Need to get your ph to 6.5 open up the hydrogen, get water moving faster via transpiration or iron won't work properly in a soiled medium. Oxygen, oxygen, oxygen.
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John_Kramer
John_Krameranswered grow question 3mo ago
Ca,Mg,P def if u see yellowing beneath then also N ppdf 1500
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Grower_Tom
Grower_Tomanswered grow question 3mo ago
It looks like thrips scarring, but I don’t think it is. I’d definitely run this one in Ai like bud said.
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Scandinavia
Scandinaviaanswered grow question 3mo ago
Post the pictures to ChatGPT along with your Diary, then you will get a way better answer and solution than we can give IMO. You can ask ChatGPT exactly like you done here and post the same pictures. Then it will give you a long and detailed answer. Best of luck! ChatGPT.com
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00110001001001111O
00110001001001111Oanswered grow question 3mo ago
35-40 dli, but you probably already got that dialed in if it didn't get all lanky or stunted. It's an autoflower, so you aren't changeing hours of operations, so just keep doing what you were doing. change of hours requires an inversely proportion change to PPFD to maintain same DLI. DLI is what matters. PPFD without hours of operation could mean one thing or another. Also, ppfd is the average across the entire canopy and not just the hotspot directly under the light. temp, rh and atmospheric co2 dictates how much photosynthesis a plant can do per day. It's not a choice we make. Looks like you may have some pests chewing on your plants. otherwise, looks fine
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I_T_C_R_W___GROW
I_T_C_R_W___GROWanswered grow question 3mo ago
looks like some kind of leaf parasite , would remove just the leafs-parts with this in it.
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