What Nutrient Issue is This!

jochhe1998 said:

Hey Guys,

I am a little stuck on what this nutrient issue might be. It is mostly appearing on upper growth which makes me think it is somewhat immobile/immobile but it also kind of looks like potassium deficiency and those symptoms do not coincide with each other.

The strain is barneys farm blue gelato 41 - I have 3 other strains in my tent and none of them are having this issue (they all get the same feed).

I've attached pictures below. The lesser damaged picture is from Tuesday and the more damaged picture is from today.

Any help would be huge.

Click to expand...

jochhe1998 said:

Hey Guys,

I am a little stuck on what this nutrient issue might be. It is mostly appearing on upper growth which makes me think it is somewhat immobile/immobile but it also kind of looks like potassium deficiency and those symptoms do not coincide with each other.

The strain is barneys farm blue gelato 41 - I have 3 other strains in my tent and none of them are having this issue (they all get the same feed).

I've attached pictures below. The lesser damaged picture is from Tuesday and the more damaged picture is from today.

Any help would be huge.

Click to expand...

HydroKid239 said:

Taking a wild guess that it’s a ph issue.

However... the other plants are the same strain getting all the same feed? If they are not the same strain, they may not be too keen on the same feedings as the others. I’ll wait to see any other info you can provide.. like type of feed, amounts of feed, and PH info.

Click to expand...

jochhe1998 said:

Hey guys,

So I started out organic using pride lands veg and bloom. The girls are in coco and they are 4 and a half weeks into flower. Never had a single issue before with any of them until I did serious defoliation - think I stressed them out too much.

On top of that, I ran out of organic feed so I switched them to synthetic (I make my own nutrients 10-41-32 for flower week 4 - 7).

PH for organic used to be between 6.0 - 6.5 but I have slowly been acclimatizing them to the lower end of that range since they're slowly switching to synthetic now.

Click to expand...

Wastei said:

You got slow released and fast released nutrients in the medium. Really hard to tell what's actually in it. Choose one or the other next time.

Defoliating slows down the metabolic rate and therefore the plant can't synthesize as much nutrients.

I'm very cautious with defoliating, should be done to bare minimum. The plant use the leaves as their main source for photosynthesis. Do you measure EC on the feeding solution?

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