Hi guys.
My first grow has been going well up until this point. I started seeing some dark spots on the leaves and reddish leaf stems. After some digging my conclusion is that the plant has some P deficency.
Also, I'm using a crappy PH soil meter that a month ago was reading 6.0 to 6.5 and now I'm seeing 5. Watered only using distilled water and got another batch of it 2 weeks ago.
Regarding the watering part, what I think I may have done is water the plants a bit too early, not letting the first inches of soil dry up.
I grow in Coco using ~30% perlite and use Biobizz nutrients.
I'll put some pics down below.
Any advice on how to deal with this?
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