Deficiency Or Toxicity?

RobGee · Feb 23, 2016

Hi peeps, got some GSM girls who are showing some yellowing tips and are a little less lush than I'm used to.

15 gal pots
Coco coir
Top feed
Canna line medium feed
Canna A 10mL per gal
Canna B 10mL per gal
Rhizotonic 8mL per gal
Cannazym 9mL per gal
CalMag 5mL per gal
Ppm are around 950 right now
Plant have been vegging 6 weeks
Temps 68-80
Humidity 40-75
Went after em with Azamax pretty hard (somehow haven't learned to stop taken cuts from buddies) hit em with 4 sprays 4-5 days apart + roasted CO2 burner with lights off for 5 hours for about a week
Plants are under 9 1000s right now
About 6 feet from the lights

Running the same program as usual, but have never seen leaves look like this. Usually don't veg for this long as I just began using 15 gal pots instead of 7s.

Always appreciate the help!
RobGee

3N1GM4 · Feb 23, 2016

Not sure, try to get a few more pics posted.

https://www.thcfarmer.com/community/threads/tobacco-mosaic-virus-tmv-testing-home-in-minutes.59503/

3N1GM4 · Feb 23, 2016

They just look a little overwatered to me?

RobGee · Feb 23, 2016

3N1GM4 said:
They just look a little overwatered to me?

Pics were taken when lights were off, will try and get a few more up

Seamaiden · Feb 23, 2016

OP, what's wrong with them? I see very, VERY slight P-, not enough to really worry about. If you're talking about that crepey appearance to the leaves, in my experience that's usually associated with pH, which you haven't relayed to us.

3N1GM4 said:
They just look a little overwatered to me?

Not really possible in coir, IME.

3N1GM4 · Feb 23, 2016

Seamaiden said:
OP, what's wrong with them? I see very, VERY slight P-, not enough to really worry about. If you're talking about that crepey appearance to the leaves, in my experience that's usually associated with pH, which you haven't relayed to us.

Not really possible in coir, IME.

I should read the posts better b4 replying

Golden Zia · Feb 26, 2016

RobGee said:
Hi peeps, got some GSM girls who are showing some yellowing tips and are a little less lush than I'm used to.

15 gal pots
Coco coir
Top feed
Canna line medium feed
Canna A 10mL per gal
Canna B 10mL per gal
Rhizotonic 8mL per gal
Cannazym 9mL per gal
CalMag 5mL per gal
Ppm are around 950 right now
Plant have been vegging 6 weeks
Temps 68-80
Humidity 40-75
Went after em with Azamax pretty hard (somehow haven't learned to stop taken cuts from buddies) hit em with 4 sprays 4-5 days apart + roasted CO2 burner with lights off for 5 hours for about a week
Plants are under 9 1000s right now
About 6 feet from the lights

Running the same program as usual, but have never seen leaves look like this. Usually don't veg for this long as I just began using 15 gal pots instead of 7s.

Always appreciate the help!
RobGee

It's difficult to identify other factors with the limited images.
From what can be seen, they appear like they could be raised up or thinned a bit. You mentioned you were burning co2 but I think meant sulfer. Given that you said for 5 hours when the lights were off. For about a week? Is this correct? If so there could be additional factors to consider. Also I didn't notice any mention of current ph. Additionally, given that you are in 15 gl of Coir, how long have the been in that size container?

Toaster79 · Feb 26, 2016

The clawing of the finger tips indicates typical N toxicity in an early stage might be locking out P due to pH imbalance. 950 ppm seems a bit high.

xavier7995 · Feb 26, 2016

I concur that it looks like maybe a bit too much water, but overall they really look fine. 15 gallon pot of coco seems huge; how long does it take to dry out enough to be noticeably lighter in weight? I tend to always over-water when I move them into their final containers and they are a bit oversized for a week or two. I think you can definitely overwater in coco; not to the point of it doing harm like it can in soil, but when I keep my medium really well saturated I wind up with plants looking similar to the OP.

Deficiency Or Toxicity?

Deficiency Or Toxicity?

RobGee

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Deficiency Or Toxicity?

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