deficiency ???

Hey guys , I’m back now , it’s been a while since I’ve gotten on here , sorry that I haven’t posted any updates , there were some people that told me to keep them posted and I appreciate that . I apologize but today I’m back with my auto og Kush first grow she’s day 47 , and she has some type of spots on her. I tried looking on the internet but I don’t want anything to throw me off. Do I would appreciate the direct help. She’s on straight coco coir , ph between 5.9 to 6.1 , temps around 75F keeping humidity low, I have some pictures of the spots and the plant itself.

Any gnats?

kIlL3RzD3lUx3 said:

Could be a number of things, I keep my humidity in the 50%-60% when they are that young. I would reccomend broadening your range of ph from between 5.5 to 6.5, the reason behind this is that your plant(s) will uptake different nutrients differently at different ph levels. Lot of differents lol the most common cause is a cal/mag deficiency.

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Thanks a lot

Midwestsmoker419 said:

Any gnats?

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No gnats

Looks like the same pH issue I was dealing with during my last grow. Soil pH tester saved my plant. I suggest getting one if your getting serious into growing. Plant looks good otherwise tho nice job!

Make sure whatever your using to test ph especially digital pens, that they are giving you an accurate reading. I have solution for testing instead of the pen to make sure every once in a while

I’m in soilless promix hp and try to keep pH around 6.5

the lower leaves are yellow it looks like a nitrogen deficiency to me

They're growing in coco. A soil pH tester is not what you want. You want a pH probe to test the nutrient solution that you're feeding which they probably already have.

pH of 5.9 to 6.1 is fine. Without knowing what you've been feeding can't say anything more.

Coco isn’t that far off from promix hp I believe you told me that

Clumpyoyster said:

Coco isn’t that far off from promix hp I believe you told me that

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If you're referring to me I don't recall saying that. But who knows. I get ginned up now and then.

In my experience coco is best between 5.9 and 6.1. If you go over or under a little it's not a big deal. I don't grow in peat based soilless mixes but from the information I've gathered from those that do 6.2 - 6.5 is good for those.