What Nutrient Issue is This!

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.

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...

Sooo what are you feeding the ladies and in what medium/soil? Cheers!

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...

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.

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.

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...

He's most certainly overfeeding, burnt tips all over. But we need more data to confirm this.

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...

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?

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?

Click to expand...

Yep I was intending on sticking to one but things didn’t go down like that.
They get around 1.6 EC when they get fed.

If this persists im flushing all of them this weekend.

i think it also might be over feeding - starting to notice a couple of burnt tips on some other plants here and there (3 leaves total on the other plants).

this BG really doesn’t like the feed.

The issue I’m having is this deficiency doesn’t look like anything I’ve ever seen before and has me a bit confused.

Looks like a Phosphorus toxicity. Not deficiency. Which locked out other immobile nutrients. Which could be a combination of copper, zinc, iron & manganese. I would flush with 7.8ph water

But yes, I tried the extremes defoliation in week 3 of flower. Stripped down the plants but left my light on full blast and that freaked them a lot. Photosynthesis really slowed down (I know because I didn’t have to water for 7 days while they’re normally bone dry after 3). They started to get a couple of pests so I knew their immunity dropped. On top of that the switch from organic to synthetic is going to bruise them even more. The girls have been through a lot.