Glossy / yellow/ purple leafs

[Jacke30]

Hey y’all
I’m growing in coco coir with perlite mix
For nutes I use Athena
I’m currently week 4 of flower
Growing under Luxx 1000w de lights
Light distance is about 3 feet
Top leaves turning glossy/ yellow/ purple
Strain is mimosa
I feed at 2.5 ec run of is 2.7 ec
Ph5.8-5.9 run off 5.9-6.0
Any ideas what my problem is ?

 

[Pmurp]

Almost sounds like a copper deficiency?

 

[Jacke30]

Another pic

 

[Jacke30]

Almost sounds like a copper deficiency?

posted another pic

 

[Jacke30]

By the way lower leaves are not affected at all, they look very healthy

 

[Pmurp]

@hotrodharley help us out? I’m still trying to learn myself, all I can think of is copper or zinc.

 

[Tracker]

I've never grown Mimosa, but maybe you're a little high on the nutrient levels, could be causing antagonistic lockout. In your pics, I don't see what I usually think is nute burn, but it could be something to think about. Have you grown Mimosa before? Do you know what to expect from it usually? Which Athena line are you using? Does it lack anything? Are you supplementing with anything it already has? When's the last time you calibrated your EC meter? What conversion scale should you use for it? When's the last time you calibrated your pH meter?

 

[Jacke30]

I've never grown Mimosa, but maybe you're a little high on the nutrient levels, could be causing antagonistic lockout. In your pics, I don't see what I usually think is nute burn, but it could be something to think about. Have you grown Mimosa before? Do you know what to expect from it usually? Which Athena line are you using? Does it lack anything? Are you supplementing with anything it already has? When's the last time you calibrated your EC meter? What conversion scale should you use for it? When's the last time you calibrated your pH meter?

i have grown mimosa before but it was a different pheno first time running this pheno

I was suspecting nute burn or light intensity but I have another row of a different strain that’s very healthy same nutes same dosages

only supplemqnt I give other then there base is
Power si And Cal mag
I use there blended line

I didn’t know you can calibrate the ec
My ph i calibrate every time the 7 and 4 disappear on my my blue lab combo meter

 

[Jacke30]

I should’ve mentioned this but my temps day/night are 83/70
Rh high low 65/55
Room gets c02 by the way

 

[Tracker]

I use a pen for TDS in units of PPM, not EC, but I always try to be around 1000 PPM for soil, aero, and NFT hydro. Based on the conversion chart below, your EC indicates a much higher TDS than I use. It's quite possible that it's salt buildup or antagonistic lockout.

 

[Tracker]

I should’ve mentioned this but my temps day/night are 83/70
Rh high low 65/55
Room gets c02 by the way

I've never run CO2. My understanding is that you can feed the plants harder, but based on the chart, it seems a little high on the feeding strength.

 

[Tracker]

I've had some phenos that were finicky about their feed. I had to dial back the strength on their feedings. But their symptoms looked like the typical tip burn and/or leaves beginning to claw. I lowered the dosage on their nutrients to half strength for a few feedings and then dialed it back up to about 75% of the level where they were showing symptoms.

 

[Tracker]

i have grown mimosa before but it was a different pheno first time running this pheno

I was suspecting nute burn or light intensity but I have another row of a different strain that’s very healthy same nutes same dosages

only supplemqnt I give other then there base is
Power si And Cal mag
I use there blended line

I didn’t know you can calibrate the ec
My ph i calibrate every time the 7 and 4 disappear on my my blue lab combo meter

Do a web search for how to calibrate an EC TDS meter and you'll see some useful results.

 

[Jacke30]

I've had some phenos that were finicky about their feed. I had to dial back the strength on their feedings. But their symptoms looked like the typical tip burn and/or leaves beginning to claw. I lowered the dosage on their nutrients to half strength for a few feedings and then dialed it back up to about 75% of the level where they were showing symptoms.

I’ll back off on the nutes and lower my lights to about 850watts and keep an eye on them
Just noticed some plants that are getting less light don’t show any signs of leaf problems

 

[Tracker]

I've also had plants with leaves that change color quite a bit late in flower. This one had about one week left when the pic was taken. You can see the fan leaves on the upper kolas changed color quite a bit. They started changing at around 5 to 6 weeks into flower.

 

[Jacke30]

I’ve had flower change color as well it’s just what happening now doesn’t look normal
The shiny leafs is what made me concerned

I've also had plants with leaves that change color quite a bit late in flower. This one had about one week left when the pic was taken. You can see the fan leaves on the upper kolas changed color quite a bit. They started changing at around 5 to 6 weeks into flower.

View attachment 4869408

 

[Jacke30]

I’m currently defoliating them and noticed the calyxs are very big/swollen

 

[Jacke30]

Bump

 

[myke]

Back off the N part of your food,raising lights or turn down like you did should help.Good runoff so your not getting build up.
Id think its mostly the lights,some just dont like it.Any red stems?

 

[myke]

2.5 EC, wowza!! You could probably lower that and save some money.