Zinc, Iron, Or Potassium Deficiency

[MegaSuiter]

I use pH'd water, don't over water, the lights are 30" away, the temps are good, and no signs of bugs.
I recently upped my nutrients and it has only gotten worse.
I also foliar spray twice a week.
This strain is Poison Kush BTW.
What do you guys think?
Any advice is appreciated.

 

[MegaSuiter]

The dying leaves underneath tell me nitrogen defiency. But I know it's not. I am giving them lots of N.

 

[cannabeans]

I think it's a toxicity...

 

[MegaSuiter]

Nitrogen toxicity? A few people said the same thing. Just figured it would be much greener and shooting out leaves everywhere. Guess every strain is different. This must be one of the more sensitive ones.

 

[DrMcSkunkins]

What is your feed schedule? Looks like a severe mg deficiency to me. Do you use calmag?

 

[DrMcSkunkins]

Also do you foliar spray with the lights on or have the wet plant under the light?

 

[MegaSuiter]

I use the recommended amount of general organics plus. I foliar feed with the lights off only. Maybe too much but often can also block the uptake of mg.
Thanks!

 

[DrMcSkunkins]

Never go by recommended doses, use a medicine dosing cup and start with 5 ml per gallon of base nutes, if your plant seems happy up the dose to 6 ml per gallon next feed etc.
My sig link has a chart with full plant pics but I think yours wont yield much in its current state.

 

[DrMcSkunkins]

I use the recommended amount of general organics plus. I foliar feed with the lights off only. Maybe too much but often can also block the uptake of mg.
Thanks!

When you say general organics plus, do you mean the whole grow line of Go box or just the calmag plus?

 

[MegaSuiter]

Just the cal mag. I use house and gardens full line. I just diluted my nutrients reservoir a little. We will see. I'll take a look at your chart.
Thanks

 

[Seamaiden]

Nitrogen toxicity? A few people said the same thing. Just figured it would be much greener and shooting out leaves everywhere. Guess every strain is different. This must be one of the more sensitive ones.

Nope, toxicities burn the plants. And since you say things got worse when you increased feeding, there's part of your tell. Also, you say pH'd. To what? What's your medium?

 

[MegaSuiter]

5.5-6.0
Straight Perlite
My death stars and chemdogs seem to love it.
Thanks

 

[NightsWatch]

Excessive phos deficient plants plain and simple and as it progressed lower leafs just died off

 

[DrMcSkunkins]

Wonder what the ph of straight perlite would be? Guess 5.5 to 6.0...
5.5 ph locks out P and Mg

 

[DrMcSkunkins]

 

[NightsWatch]

Wonder what the ph of straight perlite would be? Guess 5.5 to 6.0...
5.5 ph locks out P and Mg

Perlite and vermiculite are ph neutral 
As for buffering capabilities perlite is considered low.
And verm is rated high

 

[DrMcSkunkins]

So a mix would be better, whats wrong with coco? Why straight perlite? Experiment?

 

[MegaSuiter]

We talked a little about this like a month ago. I wasn't a fan of Coco. And if you are using Coco, you aren't depending on your medium for nutrients. So I figured perlite is lighter and provides more aeration for the roots? More or less an experiment.
But like I said before I am using Hempy buckets. I wouldn't use straight Perlite in a soil type grow.

 

[DrMcSkunkins]

Why ph 5.5 to 6.0? Do you have a ph meter or are you using strips?

 

[MegaSuiter]

I have a meter. And Hempy is hydro basically. So everyone says hydro 5.5-6.5 or whatever.