Chemdawg Auto nute issue

[hedzenmedz]

If someone would be so kind as to diagnose this deficiency. This showed up overnight on an otherwise healthy plant. This chemdawg auto from attitude is 54 days old from poking through the soil. I am using the GH line of nutes ( grow, micro, bloom, koolbloom, calmag). Also using silica, great white, Epsom salts, unsulphured molasses to a lesser degree. Growing in promix organic vegetable mix under a 450W Viparspectra led light. PH of feedings and water is at 6.4. Grow room temp is 85 with lights on and 70 in the dark.

 

[Mike20132]

Looks like a cal/mag deficiency, and the pH is a bit higher than I think I'd have it. The elevated pH may be the problem, so I will wait for those more knowledgeable on the subject chime in.

 

[BigD1128]

ANy pics of the rest of the plant?

 

[hedzenmedz]

Here’s some more photos. The plant in the foreground is a gg4 auto, chemdawg auto in the rear.

 

[namvet25]

Here’s some more photos. The plant in the foreground is a gg4 auto, chemdawg auto in the rear.

I would stop using Epsom,great white,and silica at this stage.What dosage cal/mag do you use?

 

[mikey2017]

You could be using to much calmag and I'd not use Epson salt now...

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[Waira]

...agreed, no more epsoms, too much cumulative Ca and Mg going in,...ditto for the molasses (more Ca, Mg).... all this may cause uptake issues with other nutes, start burning, toxicity issues, off pH,... the lone leaf looks like an off-pH problem, but might be early symptoms of something else,... whole plant pics show a lot of leaf tapping, plus what looks to be Mg defc. symptoms,.. this leads back to the overload of Ca and Mg inputs... they can interfere with each other's uptake when there's too much around,,..... what has been your feeding sched' and dosage? How far away are the light too,?

 

[hedzenmedz]

...agreed, no more epsoms, too much cumulative Ca and Mg going in,...ditto for the molasses (more Ca, Mg).... all this may cause uptake issues with other nutes, start burning, toxicity issues, off pH,... the lone leaf looks like an off-pH problem, but might be early symptoms of something else,... whole plant pics show a lot of leaf tapping, plus what looks to be Mg defc. symptoms,.. this leads back to the overload of Ca and Mg inputs... they can interfere with each other's uptake when there's too much around,,..... what has been your feeding sched' and dosage? How far away are the light too,?

Hi Waira - thank you for your feedback. Things are looking better. I have stopped using the Epsom salts, great white and molasses. The lights are 18-20 inches above the highest part of the canopy. The last feeding made was 1.5 grow, 2.5 micro, 3.5 bloom and 3.5 calmag per gallon ph’d to 6.4. Light schedule is 18 on, 6 off. What does the term “leaf tapping” mean? Have not heard that before.

 

[hedzenmedz]

You could be using to much calmag and I'd not use Epson salt now...

Sent from my H1611 using Tapatalk

I have stopped using the Epsom salt. Thanks for the feedback.

 

[Mike20132]

Hi Waira - thank you for your feedback. Things are looking better. I have stopped using the Epsom salts, great white and molasses. The lights are 18-20 inches above the highest part of the canopy. The last feeding made was 1.5 grow, 2.5 micro, 3.5 bloom and 3.5 calmag per gallon ph’d to 6.4. Light schedule is 18 on, 6 off. What does the term “leaf tapping” mean? Have not heard that before.

Just out of curiosity, what is the thought process for using different amounts of the grow/micro/bloom? I've always mixed them in equal portions.