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Strange yellow spots on old leaves

NYCoffee
NYCoffeestarted grow question 5y ago
Hey guys, I noticed that strange yellow spots appeared on old leaves. What could be causing this? I'm using ebb & Flow hydroponics Solution: Hesi PowerZyme 1 ml/l Hesi - SuperVit 0.01 ml/l GHE - FloraBloom 1.25 ml/l GHE - FloraMicro 0.65ml/l pH = 5.65 ppm=430
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Week 4
Leaves. Color - Yellow
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Fruitgrower
Fruitgroweranswered grow question 5y ago
One of 3 things. 1. Calcium defeciency. 2. Nutrient water spillage 3. Insects under the leaves are eating /sucking
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NYCoffee
NYCoffeeanswered grow question 5y ago
@californiaogkush I'm using hydroponics, not soil, ph 5.6 is ok for it, and I can't @fruitgrower looks like you are right about deficiency, I have completely changed solution, hope this are not insects
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CaliforniaOGkush
CaliforniaOGkushanswered grow question 5y ago
Cut those leaves off spray with light Neem oil from Home Depot ASAP or whatever you can get you’re hands on let soil dry out For now don’t flush when you water after wards jus plain ph water then a light foliar feed afterwards be patient don’t feed till the soil dries out again
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