1st week of flower, deficiency, what one?

Nutty sKunK

Nutty sKunK

Well-Known Member
So my 2 month old Kali Mist (topped) has been showing some signs of a deficiency. I've had a look around and as far as I'm aware it could be Iron, Zinc or Sulfur (Mg). Also, the temps have been a bit low, around 15-18c during night. Although last night I manged to get them up to 20c with a blanket. Could this be causing it? I've also had some problems after adding lime to the mix which offset the balance of Cal and mg, too much cal although that was over a month ago and in veg was looking really healthy.

Info:

Soft Water - 36 PPM
Coco Coir
400w HPS (8-12" away)
PH 5.8 (should I rase it now it's week 1 of flower?)
900 PPM feed of A + B, Root Stim, Hygrozyme and occasionally some cal mag

What I've done so far:

I've feed 1ml/L of Iron Chelate, condition's didn't really alter. Foliar fed 1 tbsp per gal of Epsom Salts, conditions improved a wee bit, yellowing was still happening. Also added some Micro nutrients.

Conclusion so far:

I think it's a mixture of things to be honest but all help is much appreciated! Thanks guys :weed:
 

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Anyone have any ideas? Things are getting a bit worse, the very tips of the leaves are turning, looks like a hook. Also almost all of the leaves have the spikey edges pointing up...

Really don't know what to do...
 
Got some more pics here. I'm thinking it could be zinc deficiency!


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It's a combination.. I see heat stress for sure.. But zinc is definitely your problem.. Flush with a good micro nute.
 
The curling i should of mentioned is from water hitting the bottom of the leaf, made it curl! Yeah I plan on flushing with Canna's Trace element mix. Cheers for the help dude!
 
Yeah I didn't notice the claw just saw tight veins and raised fringes which usually means heat stess. Canna is great stuff!!! I use canna aqua now but am switching to cutting edge solutions due to price of nutes did a side by side with little difference
 
None now Seeds germing! but I'm sure I can find pics of my outdoor grow! They were monsters! Great outdoor strain
 
Serious!!! But I also grew a few male plants because km is my favorite outdoor strain. Besides bubba ( colas the size of my head). But zinc is definitely your issue man plus a combination but u know that.. Flush and when u restart feeding go just over half strengthed nutes.. Try and keep your temp as stable as possible. 72 is optimal temp.
 
I flushed her out today with a trace element feed containing 0.3% zinc. Only took 20L in a 15L pot to get the PPM down to input level. The last few liters or so was with a half strength feed. Also turns out my PPM meter is giving me lies. Actually feeding them at 1300 instead of 900...

I was also wondering, since Zinc is best absorbed at 5.5 should I feed at the level, even though you're suppose to raise in flower?
 
Lieing ppms's no good!! Imho 1300 is high this early I would bring it I between 750 and 900 depending in strain. Maybe even lower. And yeah I would feed at that level unless the plants are asking for more or less adjust accordingly.. I just let my plants tell me what they want. The trace elemen was it a complete micro??
i
 
NWGrower7 said:
Lieing ppms's no good!! Imho 1300 is high this early I would bring it I between 750 and 900 depending in strain. Maybe even lower. And yeah I would feed at that level unless the plants are asking for more or less adjust accordingly.. I just let my plants tell me what they want. The trace elemen was it a complete micro??
i
Click to expand...

Yeah I was shooting for 900, will feed at 600-700 now (according to my PPM) Reading the plants as you say is best, just learn more and more :) Ermm not sure, it was this one here: http://www.3ch.co.uk/plant-aid/plant-health/canna-trace-mix-1-litre/prod_237.html
 
Definitely! That should take them out of it no prob but won't reverse any damage done.. Never used it though. Im thinking about switching to cutting edge from canna do to price.
 
Nutty sKunK said:
900 PPM feed of A + B, Root Stim, Hygrozyme and occasionally some cal mag
Click to expand...

So, what's the NPK and micro values? Labels mean nothing to me, only the elemental analysis. You need to get a handle on plant nutrition, for example........

I've feed 1ml/L of Iron Chelate, condition's didn't really alter. Foliar fed 1 tbsp per gal of Epsom Salts, conditions improved a wee bit, yellowing was still happening. Also added some Micro nutrients.
Click to expand...

What was that for? Did you have a chlorosis problem on the lower leaves? Can't tell based on photos under HPS. You must take the photos using a natural white balance setting.

Now, what you've done is thrown everything at the wall hoping something sticks. By giving the plant something it doesn't require, you cause more harm than good. For instance, too much Mg induces a deficiency of Ca and K. Bookmark this link - http://www.totalgro.com/concepts.htm

I'm surprised you have any leaves left at all based on the extreme amount of epsom salts applied and the fact that you have deprived them of much needed N. Haven't seen a cannabis specific nute that didn't have a deficiency of N. One reason I won't touch them.

Good luck,
UB
 
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