Check my buddy's plant out, please.

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He's using fox farm soil. PHing feeds at 6.5.
Feeding this.
Screenshot_20170304-181350.png

And CalMg.

Lower leaf
Screenshot_20170304-181400.png

Whole plant. Well...tent.
Screenshot_20170304-181409.png
 
I am certainly no expert but if he has been feeding Cal/Mag regularly the only other thing I've seen in grow books/charts... Manganese/Iron def?

If your buddy has it, pH the soil itself with a good meter? Could just be FF strikes again with pH and or high nute problems out of the bag.
 
Ya its cal mag..anytime its rusts out in middle of leaf.if it startd at tips of fans thats wen yur high on nutes.if yur not flower mode yet get that humidity up too.
 
Looks to be Mg def to me. LED? RO or distilled water? Both require added amounts of CaMg. It would be best to just check the medium pH to make sure you are getting good nutrient absorption.
 
I am certainly no expert but if he has been feeding Cal/Mag regularly the only other thing I've seen in grow books/charts... Manganese/Iron def?

If your buddy has it, pH the soil itself with a good meter? Could just be FF strikes again with pH and or high nute problems out of the bag.
Ya its cal mag..anytime its rusts out in middle of leaf.if it startd at tips of fans thats wen yur high on nutes.if yur not flower mode yet get that humidity up too.
Thanks for having a look peeps. Much appreciated.
Looks to be Mg def to me. LED? RO or distilled water? Both require added amounts of CaMg. It would be best to just check the medium pH to make sure you are getting good nutrient absorption.
That's what I thought too. Although it looks a bit funny. I told him to foilar spray with some Epsom salt, since it will be a bit before his pot sets out. I'll give him the heads up about soil ph meter, as well.
Thanks @Heavily Medicated
 
Looks to be Mg def to me. LED? RO or distilled water? Both require added amounts of CaMg. It would be best to just check the medium pH to make sure you are getting good nutrient absorption.
I forgot to answer your questions. AutoCobs and tap water. Thanks again!
 
Wats the tap ph Yeatster ? Looks cal or p to me but i don't know a thing about ff soil.
 
Daym, that is wierd looking. How long has it been going on?
 
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