Nutirent problem mabey

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Orblight

Well-Known Member

• Nov 23, 2020

• #1

Hi just found this forum great place for info been looking into deficiencys trying to work out what's going on thinking Mabey mag problem but I'm not sure.
2 clones started growing at the start of this month where doing really well bit now my leaves look weird an growth has slowed down quite a lot. There currently approximately 30cm tall and 60cm wide
25l pots with a 70/30 coco perlite mix
Feeding daily with house and garden cocos at 1.7 ec and 5.8 ph, with good amount of runoff my tap water is 0.6ec tho so there only really getting 1.2 worth of the nutes I guess.

 

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TintEastwood

Well-Known Member

• Nov 23, 2020

• #2

Good eye. I might up the PH to 6.1ish. For better uptake of ca and mg already in your nutes.
And you may need to add a little calmag.

How To Set EC Targets - General EC Ranges for Cannabis in Coco - Coco For Cannabis - Plant Science

How strong should your nutrient solution be for cannabis? The strength should be determined by EC or PPM. We walk you through how to set EC/PPM targets.

www.cocoforcannabis.com

 

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Orblight

Well-Known Member

• Nov 23, 2020

• #3

Thanks. The o my thing that confuses me is that it's showing on all the newer leaves, I've read mag normally effects the lower leaves.
I have never been able to get my runoff ph below 6.4 for some reason either, I hope this wouldn't be effecting my plants it's always going in at going5.8.
I'll try bump the ph up a little see if it jeĺps an Mabey get some cal mag

 

TintEastwood

Well-Known Member

• Nov 23, 2020

• #4

I have never checked runoff ph. Only ppm.

 

kovidkough

Well-Known Member

• Nov 23, 2020

• #5

do you have LED?

 

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Orblight

Well-Known Member

• Nov 23, 2020

• #6

Ok so runn off ph doesn't really matter just ppm?

Yes led 2 spider farmer sf2000s

 

TintEastwood

Well-Known Member

• Nov 23, 2020

• #7

Orblight said:

Ok so runn off ph doesn't really matter just ppm?

Yes led 2 spider farmer sf2000s

Click to expand...

Yes.

From the cocoforcannabis site....

Ignore Run-Off pH
Although it is critical to adjust the pH of the inflow, you should not be concerned with the pH of the run-off water. Your only concern with pH is always providing nutrient solution (inflow) that is in the appropriate range. Many growers make the bad decision to provide nutrient solution that is outside of the acceptable range in a misguided attempt to correct run-off pH values. This can destabilize the pH of the nutrient solution in the root zone and make nutrients unavailable. To avoid this common pitfall, simply ignore the pH of the run-off.

 

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Orblight

Well-Known Member

• Nov 24, 2020

• #8

If i was too add Epsom salts to my feed, as I can't afford to buy any cal mag at the moment does anyone know the correct dose? I've tried to search for it but all I keep finding is for a spray saying 1 tablespoon per 4 litres and spray leaves every 3 days with that.

 

TintEastwood

Well-Known Member

• Nov 24, 2020

• #9

Orblight said:

If i was too add Epsom salts to my feed, as I can't afford to buy any cal mag at the moment does anyone know the correct dose? I've tried to search for it but all I keep finding is for a spray saying 1 tablespoon per 4 litres and spray leaves every 3 days with that.

Click to expand...