Calcium deficiency, foliar spray during flower?

GeriPie93

Member
Hey everyone.

I have an amnesia haze auto starting it's 6th week of flower today. This is my first grow. I've noticed the past couple days the bud growth has pretty much stopped, and I have signs of calcium deficiency on my leaves. (Small orange/brown spots on older fan leaves at top of plant)
I think I've given this plant too much nitrogen pretty much throughout its life. It's always been quite dark green but it's grown well and had no other signs of toxicity so it didn't click right away but now my soil pH is dropping and I'm getting calcium deficiency which I've read all comes hand in hand.

I gave it a water yesterday with 6.8 pH water (no nutrients) and it came the out around 6.4. I've looked around the internet to get some idea of how to fix this.
I really don't want to flush because I don't really have access to that much water if I need to dechlorinate it and pH (my tap water comes out around 8.3pH)

I've read that a good way to get nutrients to your plants quickly is a foliar spray and my question is, can I do a calmag foliar spray with my plant this far into flower? And is there a quick way to fix my soil pH issue without flushing?

I've put some pictures of my plant this morning. I know it's not major but I want to catch it quick as I'm getting on into flower.

Thanks!

Set up:
3x3 tent
600w meizhi LED 14" from canopy
6" exhaust and intake fan
12" oscillating fan
3gallon air pot
Westland multi purpose with added John Innes soil (realised this probably wasn't good for an auto after the fact)
And I'm using bio bizz grow, bloom, and top max to feed.
 

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WintersBones

Well-Known Member
Looks pretty good to me, I wouldn't do anything major like a flush. Foliar feeding CalMag does work, don't think it can hurt but I wouldn't worry too much either.
 

MintyDreadlocks

Well-Known Member
Looks pretty good to me, I wouldn't do anything major like a flush. Foliar feeding CalMag does work, don't think it can hurt but I wouldn't worry too much either.
By foliage feeding in flower you're essentially mixing nutrients with your plants resin. Your end result is unhealthy and would affect taste. Not to mention it could harbor the perfect environment for mold to grow.
 

WintersBones

Well-Known Member
By foliage feeding in flower you're essentially mixing nutrients with your plants resin. Your end result is unhealthy and would affect taste. Not to mention it could harbor the perfect environment for mold to grow.
He's pretty early in flower still so I doubt it would affect the taste at this point but mold is certainly a concern whenever you're introducing moisture for sure.
 

GeriPie93

Member
He's pretty early in flower still so I doubt it would affect the taste at this point but mold is certainly a concern whenever you're introducing moisture for sure.
Yeah I was worried about mold if I sprayed. There have been more spots showing on the leaves throughout today. So should I just keep watering with higher pH water to try and sort the soil out? I just felt like it was effecting my bud growth. Is it normal for the growth to slow at this stage?

Thanks for the advice.
 

MintyDreadlocks

Well-Known Member
I missed that this was a auto. I would stop feeding it so much and go plain water for awhile PhD.

Autos are super sensitive to nutes and some autos will be completely lackluster once introduced to heavy feeds.
 

GeriPie93

Member
I missed that this was a auto. I would stop feeding it so much and go plain water for awhile PhD.

Autos are super sensitive to nutes and some autos will be completely lackluster once introduced to heavy feeds.
Brilliant. Thank you. I'll to just water until I see things clearing up a bit.
 

MintyDreadlocks

Well-Known Member
How do you fix that
Honestly if you just water without nutes it's gonna sort itself out. Happens a lot with hot soil for me too. Never a issue come flowering though.

As for op he's running a auto which isn't able to sort itself out as easily as a photo would come the flowering stage. Due to it's short life and smaller size.
 
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