What kind of deficiency is this?!

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genuisgeek

Member
I started seeing these darkish purplish spots around the edges of a lot of my leaves and it's been leaving me super concerned. I don't understand how this is happening especially since i'm using MG potting soil. This is my second grow with mg and this didn't happen the first time. I was thinking it was somekind of phosphorus deficiency but im unsure because this is my first time see this. How quickly can i solve this? it's outdoor and has started flowering.

thanks bongsmilie
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M

magnesium

Member
You're right, looks to be a phos deficiency but also looks like it could be a magnesium deficiency.

Need more info though. What is the PH of your water? Have you checked the PH of the soil? Have you flushed? etc
 
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genuisgeek

Member
I use straight tap water, I was worried about pH because I thought it would prevent certain nutrients from being absorbed. I flushed once on accident from watering too much at one time. I'm not sure if it can be calcium deficiency because i mix in eggshells to the soil to increase calcium content.
Is there any way to quicken the recovery process for my phosphorus deficiency? and how?
 
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genuisgeek

Member
are you sure its nute burn? the leaves that have this purple brown thing don't start burning from the tip as normal nute burn I have seen. It's widespread all along the edges of the leaves. doesn't this rule out nute burn?
 
M

magnesium

Member
genuisgeek said:
are you sure its nute burn? the leaves that have this purple brown thing don't start burning from the tip as normal nute burn I have seen. It's widespread all along the edges of the leaves. doesn't this rule out nute burn?
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Filter and PH your water. Any rain will have 0 salts and a neutral PH, but if you're watering with tap water it could have a PPM of 250+ easily and a PH of 8 which can lock out any nitrogen and magnesium. Take care of that and your plant will bounce back.
 
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