Was wondering if this is a calcium deficiency? See some similar pictures with people saying that it is a result of the pH dropping below 5? Could this have anything to do with me LEDs potentially being hung too low? Any help would be much appreciated, thanks!
@highsnackz Hi mate, welcome to Percys, It is unlikly to be the light, as the top leaves would have problems if it was 
Can you tell us more about the grow mate? You're in living soil by the look of things?
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I had the same problem. In my case I grow using LightMix from BioBizz. I use underground water, which apparently is low in calcium. So I could correct my problem using CalMag also form BioBizz.
It can be a deficiency or it can be a lockout, meaning calcium is there in your substrate but for some reason your plant isn't uptaking it.
Give us more information please:
- soil or coco?
- tap water? underground water? bottle water? RO water?
- Do you check your solution pH before fertigating? If so, how high/low is it?
- Temperature? Soil temperature? RH? Water temperature?
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Hi macky! Thanks for the warm welcome! Strain is an auto green gelato from Royal seeds at 31 days old at time of pic. Using biobizz all mix as the grow medium with telos 285w 10 Pro leds. Let me know if you need any more info!
I had the same problem. In my case I grow using LightMix from BioBizz. I use underground water, which apparently is low in calcium. So I could correct my problem using CalMag also form BioBizz.
It can be a deficiency or it can be a lockout, meaning calcium is there in your substrate but for some reason your plant isn't uptaking it.
Give us more information please:
- soil or coco?
- tap water? underground water? bottle water? RO water?
- Do you check your solution pH before fertigating? If so, how high/low is it?
- Temperature? Soil temperature? RH? Water temperature?
This ort of info would be great mate I think it could be calcium but best to know before we make a sure diagnosis
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"Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.”
― Mark Twain
Hi galandil! Hope you were able to get your calcium deficiency under control. Currently the medium I am using is soil (biobizz allmix). Majority of the water I have been using have been rainwater that has been collected except one water on day 29 using dechorinated tap water. Have not been able to pH prior to feeds but rain water should be in the 6-6.5 range, no idea in regards to tap water but I think i have hard water in my area if that's helpful. Temps around 20-23c, rh around 50-57% and water will be room temp. Thanks for the help, much appreciated!
Just replied to galandil with all that info
have you fed the plant any nutrients at all yet mate? Or just watering?
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― Mark Twain
Just watered for first 3 weeks then biobizz root juice 4ml/litre on day 21 and 0.7g/litre of biosy and 1ml/litre biobizz grow the following water. Flushed 2 days ago and issues have worsened. Was day 31 time of photo.
Hi buddy ,not a soil man , your new growth looks to be symptom free , I get old manky looking old leaves as the plant gets bigger ,not sure if this helps
Sucking ⛽
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