Another calcium, magnesium question/problem

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Clk55r1d3h

Member
Hey ma dudes, back again with another small issue. Haha. So, second week of flower notices some leaves on some of the plants showing signs of some kind of deficiency. Generally looking good but don't wanna make things worse by not getting in front of it. I'm assuming it's either calcium or magnesium or both.

I flushed the plant yesterday and fed right after base nutes and 3ml calmag.
Ph: 6.0
Ec: 2.0

Before flush
Ph: 5.7-5.8
Ec: 2.2

Hand Feeding coco 70/30 every other day. They are not dry or too wet.

House and garden Coco A/B
Pro-Silicate

Temp average: 78
Humidity average : 58 day/61 night
Co2: 800-1000 ppm
LED lighting getting 800-1000 ppfd

Plants overall look real good just like I said some of the top leaves only have shown signs of something. Here are the pics.
 

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A

ALPHA.GanjaGuy

Well-Known Member
I see on the House and Gardens site they suggest; "Start off in the growth cycle with an EC 1.2, increase following the grow schedule until the end of bloom and finish with an EC of around 2.0. "

My guess is you may be pushing them a little too hard compared to what they're ready for and ph may be a bit high but I don't run their line and don't have experience with it, someone else should be along to better help diagnose.

Below are issues that it almost resembles.. Manganese excess or Born deficiency.. It's just rare to have issues with these micro nutrients.


 
B

BeauVida

Member
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Foliar Symptomology, Nutrient Content, Yield, and Secondary Metabolite Variability of Cannabis Grown Hydroponically with Different Single-Element Nutrient Deficiencies

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Characterization of Nutrient Disorders of Cannabis sativa

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1

1212ham

Well-Known Member
Clk55r1d3h said:
Hey ma dudes, back again with another small issue. Haha. So, second week of flower notices some leaves on some of the plants showing signs of some kind of deficiency. Generally looking good but don't wanna make things worse by not getting in front of it. I'm assuming it's either calcium or magnesium or both.

I flushed the plant yesterday and fed right after base nutes and 3ml calmag.
Ph: 6.0
Ec: 2.0

Before flush
Ph: 5.7-5.8
Ec: 2.2

Hand Feeding coco 70/30 every other day. They are not dry or too wet.

House and garden Coco A/B
Pro-Silicate

Temp average: 78
Humidity average : 58 day/61 night
Co2: 800-1000 ppm
LED lighting getting 800-1000 ppfd

Plants overall look real good just like I said some of the top leaves only have shown signs of something. Here are the pics.
Click to expand...
Feed every day in coco. Stop flushing. 2.0 EC is high for coco, many run around 1.0-1.4.

Watering coco and feeding routine

Hey everybody question about coco. Been told not to let it dry out and to water one day and feed the next. My pots are 10Ls and the plants are only small so they dont drink a lot so the coco is always wet if i follow that watering schedule. Do i just give small amounts of water each time or do...
www.rollitup.org
 
C

Clk55r1d3h

Member
I follow their schedule, when I talk to the rep for house and garden, he said the schedule is on more of the cautious side, and that most strains you can give more. I am not giving more I'm doing what the chart says.

These are big plants, and one thing I forgot to mention is my tap water is .5 ec so I'm feeding 1.5 ec at this point. Although it does look like the pictures kind of, I doubt they are deficient in those nutrients, my ph is 6.0. I don't have any burns or anything.
 
C

Clk55r1d3h

Member
1212ham said:
Feed every day in coco. Stop flushing. 2.0 EC is high for coco, many run around 1.0-1.4.

Watering coco and feeding routine

Hey everybody question about coco. Been told not to let it dry out and to water one day and feed the next. My pots are 10Ls and the plants are only small so they dont drink a lot so the coco is always wet if i follow that watering schedule. Do i just give small amounts of water each time or do...
www.rollitup.org
Click to expand...
My starting ec is .5 so I'm feeding 1.5 ec at the moment and like I mentioned these are very big plants, nice and thick stocks.
 
C

Clk55r1d3h

Member
I'll do that and keep an eye on them. So are we sure this is not calmag issue whether it's not enough for lock out or something.
 
C

Clk55r1d3h

Member
Ok I'll stop the calmag bring the ec down to 1.2 and check on them. So of I'm starting with .5 ec I should only add .7 ec of nutes.
 
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ALPHA.GanjaGuy

Well-Known Member
ph, ec, watering practices

coco you feed every day not every other, ec was high and ph could go a little lower 5.8 would be ideal

also you may benefit from low 80's when running led
 
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