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Leaves are showing multiple problems
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It could be that because of pot size your plant can only support so much above ground. Buds get priority, so lower leaves usually get shorted. I've never grown in regular soil so you ought to wait for somebody more familiar to respond.Coconut Grove
4x4 tent, Platinum LED P4-XML2, four Patio Pickers. Vegging Liberty Haze, Acapulco Gold, Lavender and Sweet Amnesia Haze.
3x3 tent, Platinum P300 LED. Flowering two Tangies.
Flower tent:
4x4 tent, Platinum LED P4-XML2, four Patio Pickers. Vegging Super Lemon Haze, Durban Poison and two Tangie x Blueberry crosses.
Nursery:
32"x32" tent with Feit white LED. Vegging four Mother's Finest.
Coco/Perlite/worm castings/mycorrhizae living soil mix.
Down-To-Earth dry amendments. Gnarly Barley added weekly. Eisenia fetida.
On deck: Winter indicas.
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She looks thirsty AF. Are the amendments your giving her dry or liquid? If dry you won't see much of a response for a while. They take time to break down.5x5 Gorilla tent
Spectrum King SK402 - 2× Optic XL1
Infinity T8 exhaust fan
Technaflora nutes
Nectar of the Gods soil
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I'm giving her liquid amendments from the start, it's organic program and it was fine, it's fine with all other plants. I've been watering her every 4 days since flowering. I measure the soil before I water. It's that some leaves are falling off...the oldest ones, the rest started clawing and having curled burned tip as in nutrient burn.
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Based on the limited info you've provided, my first inclination is that they have had heat stress. I've also seen similar effects from an over feeding of nitrogen during flower.
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Are you using nutirents designed for bloom= less nitrogen and more phosphorus and potassium in flowering. Veg plants need more nitrogen less phosphorus and potassium for more growth. Imo your nutes are way to hot for flowering, burning your plants up. Also how close do you have your lights to the canopy?
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For your reading pleasure, or just look at the pics!
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Calcium can’t get absorbed under 6,2 for a soil grow.
so the Ph is too low.
what kind of soil is that? You just mention soil not what kind ? 20% perlite is a little on the lower side in my opinion. What is the pot size? And how much water are you giving it. ? And how often ?Just because people are over 50 doesn’t mean they know everything.
You can teach a old dog new tricks - But it will still think the old ways are the “best” lol
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The soil is Composana potting soil. And it's perfect. My friend had about 15 runs with that soil and his buds looked and tasted like a dream. It wasn't Ph. PH is fine, I have a very hard water here and everything over 6 was killing my plants. They are thriving with Ph6.
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Just because someone else uses it, doesn’t mean it’s a super soil or something. It’s just a scientific fact that calcium can’t get absorbed by the roots. And the soil look at way to “heavy” not much perlite in it.
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Even though you seems certain that it isn't a nutrient toxicity problem, it might be better to error on the side of caution and give it a good flush or even two. It's unlikely to do any damage and could possibly save it. You say the plant turned very rapidly and that is often an indicator of over feeding. Deficiencies tend to develop over time.
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