Think I have a Cal Deficiency....

I

IndoorScore

Active Member
Pretty sure this is a Ca deficiency but wanted some confirmation...
Tap water is ~80ppm, Feeding 7G/Gal Maxibloom and up until this morning 4ml/gal cal-mag. Just upped it to 5.5, but this seems like quite a bit of Ca to show this much.... Been showing for maybe a week or two lightly but my PH was ~6.2 and i thought dropping to 5.7-58 might correct the problem.

Medium: Coco
Age of plants: 9 weeks from seed
Nutrient: Maxibloom/calmag
PPM: ~1150
Tap PPM: 80
Opinions welcome, thinking of doing an epsom salt foliar.

Thanks



Another plant:

 
Jypsy Dog

Jypsy Dog

Well-Known Member
IndoorScore said:
Pretty sure this is a Ca deficiency but wanted some confirmation...
Tap water is ~80ppm, Feeding 7G/Gal Maxibloom and up until this morning 4ml/gal cal-mag. Just upped it to 5.5, but this seems like quite a bit of Ca to show this much.... Been showing for maybe a week or two lightly but my PH was ~6.2 and i thought dropping to 5.7-58 might correct the problem.

Medium: Coco
Age of plants: 9 weeks from seed
Nutrient: Maxibloom/calmag
PPM: ~1150
Tap PPM: 80
Opinions welcome, thinking of doing an epsom salt foliar.

Thanks



Another plant:

Click to expand...
BIG TIME!! Get the pH down and stay around 5mil/gal on the Cal/Mag.
http://www.ilovegrowingmarijuana.com/nutrients-deficiency-calcium/
 
I

IndoorScore

Active Member
Yeah, the PH I believe was the original issue, I should have been shooting for 5.7ish instead of letting it float up to and feeding over 6.0... Still time to turn em around before i flip the lights though.
 
Jypsy Dog

Jypsy Dog

Well-Known Member
Pull the worst of the fucked up leaves. Once 60% of the surface is gone, it's more of a drag on the plant.
I'm RO and LED, always a Calcium issue waiting to jump up. :shock:
 
Jypsy Dog

Jypsy Dog

Well-Known Member
Chumly said:
Hey Jypsy Dog, newbie here that's a little confused by all the ph charts. I've noticed on the 420 magazine chart that it shows Ca range as 4.8 to 5.9, this contradicts all the other charts I have seen. What gives? Just a noob that is a little confused by this. Here's two other charts I'm comparing it to.
Click to expand...
The GWE is wrong. They won't fix it for some reason. This is the chart I feel is correct.
I grow hydro, so my "sweet spot" is 5.8/6.2
 

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Chumly

Chumly

Member
Jypsy Dog said:
The GWE is wrong. They won't fix it for some reason. This is the chart I feel is correct.
I grow hydro, so my "sweet spot" is 5.8/6.2
Click to expand...
I've done a lot of research in the past couple months and everything I find in books, charts and around the net says calcium uptake in hydro is best at a ph of 6.2 or around 6.0 to 6.5. The chart you posted is the only source I can find that states under 5.8 being the optimum range.
I'm a little confused here as a noobie, but I'm thinking the chart you posted from 420 magazine is the one that has it wrong from what I can tell. Anyone able to shed some light on this? Would really love to figure this out for sure. Any help would be much appreciated.
 
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