Day 14 flower signs of mag deficiency

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sourdieselyumyum

Well-Known Member
Gonna try and keep a log on this to see if I can fix the problem I've been having in coco for the last few runs. Looks like early signs of magnesium deficiency. Rest of plant look healthy and green. Couple pics of other plant looks like some nutrient burn.
 

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BygonEra

BygonEra

Well-Known Member
Doesn't look like mag def to me... you will usually see a stripey look to the leaves as the leaf veins remain dark green and tends to start at new growth. Plant looks very healthy to me... if anything I would potentially add a little more micro next time you water. Could be sulfur? Be careful as it definitely looks like you have a little nute burn going on.
 
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sourdieselyumyum

Well-Known Member
I'm using cns 17 bloom last water was 750ppm with 800-900 ppm runoff pH between 6.3-6.4 runoff. Today I watered with 300 ppm calmag/hydroplex runoff ppm was between 600-750 ppm with similar pH. Maybe I should flush with flora kleen then water in 600-700 ppm bloom with Epsom salts
 
Hotboxbudz

Hotboxbudz

Well-Known Member
sourdieselyumyum said:
I'm using cns 17 bloom last water was 750ppm with 800-900 ppm runoff pH between 6.3-6.4 runoff. Today I watered with 300 ppm calmag/hydroplex runoff ppm was between 600-750 ppm with similar pH. Maybe I should flush with flora kleen then water in 600-700 ppm bloom with Epsom salts
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Looking at it again with this new info. I feel you have a phosphorus toxicity and its locking out your trace elements.
 
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sourdieselyumyum

Well-Known Member
The one that is showing most damage is in 3gal coco smart its almost completely dry every other day the others are in 2gal smart pots coco and they are bone dry every other day. I know they say that runoff pH isn't accurate but in my past grow where the runoff pH was in range of 5.6 -6.2 I had little problems if any. Hoping that if I flush then feed it will bring them closer to 6.0 range 6.3-6.5 is pretty high to me.
 
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sourdieselyumyum

Well-Known Member
Day 19 of flowerPlants starting to show more signs of the deficiency. I don't really think it's burn. I flushed then watered yesterday with 700 ppm ph to 5.6 runoff off was pretty consistent with every pot reading 6.4 with around 680-750 ppm. Lower leaves have be dying for awhile now.
 

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patrickkawi37

Well-Known Member
When your ph comes out higher and your ppm is not much higher than what it's going in. Usually means they need more food for me.. I would hit 250-300 ppms of cal mag on top of non ro water then add your regular feed to get it to 850ish and see how it goes . If you do have a mag deficiency that should fix it.

Don't use the brick coco I always get lock outs in that garbage.
 
Hotboxbudz

Hotboxbudz

Well-Known Member
I still say its getting to much phosphorus. Signs of phosphorus toxicity,

new leaves grow blades thinner
new leaves grow intervainal chorosis
Yellowing from the top downwards
Middle of the plant leaf tips and margins burn
Less internodal space
Diminished harvest
Zinc and iron micro nutrient deficiency
Calcium and magnesium deficiency
Lower leaves curl and develop spots
Dry buds will have a chemical taste
Root tips rot and die back
 
GrowinWizer10

GrowinWizer10

Active Member
ive never done runoff water at all especially in soil, its a waste of time in my book, it only matters what is going in and i do it by tsp or tbs per gallon and ph
 
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sourdieselyumyum

Well-Known Member
Idk Im just gonna document this last grow of this strain for reference and am gonna go back to critcal kush strain I can get good yields with. The first run on this strain went damn near perfect running same nutes and ec.
 
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