MAGNESIUM DEFICIENCY HELP(edit) I think I’m struggling with abundance now

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Strawberrygrowin

Member
I’m on my 3rd grow cycle and my veg always suffers from TERRIBLE magnesium deficiency, I started with filtered water had this issue found out that filtered water strips the SOIL and will not allow sufficient cal/mag to enter the plant, I switched to city tap water PH comes out at 7.5 I bring it to 6.5 with GH PH DOWN but to no avail same ISSUE, I looked at my water analysis and I see the calcium to magnesium ratio is off leaning more towards calcium then the magnesium and I know more then one or the other can and will lock out the other I am so ready to cut my losses throwing everything but the kitchen sink at my plants I’ve tried epsom and TSP CAL/mag (no nitrogen) my battle here is finding a balance with my water but I JUST DONT KNOW WHAT TO DO DO PLEASE HELP ME <3
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OldMedUser

OldMedUser

Well-Known Member
That does not look like low Mg to me. Mg is highly moblile so if your plants can't get it from the soil they will steal it from the older fan leaves and the interveinal chlorosis is quite yellow looking as soon as it happens then brown spots will appear in the worst of the leaves.

Magnesium.jpg

What does your water analysis say about copper? It does not take much extra copper to show an excess in the newer growth like yours is showing. Extra copper isn't good for us either so it's not likely that high in your water. I think you have an excess of something or many things happening and it might be wise to follow the advice that @Lenin1917 gave you. I would flush with some RO if you can get it then as the last full wash thru make it a balanced diet of half strength nutes. Don't let the plants starve while drying out after a flush. Flush at least one full pot volume of water thru then do it again with the feed. Decent nutes should have enough Ca and Mg in them that you don't need to add calmag.

Note the leaves on the excess side.

Copper.jpg

I've been using nothing but RO or distilled water for the last 20 years and barely use any calmag. The ProMix HP I use has lots of two types of lime that supply plenty for a long time tho I plant to recycle it more so will probably need to add more calmag or get some more dolomitic lime to keep the pH right and work as calmag.

Save this one.

CervantesNutrientChart.jpg

Good luck!

:peace:
 
Nutty sKunK

Nutty sKunK

Well-Known Member
Strawberrygrowin said:
No current pics but this is my 2nd veg cycle with the issue I am having now, I use dr.earth all purpose 4-4-4 and 2-9-4 bloom for trans ion/flower
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Looks like Zn def to me. Cu def usually makes the tips of the leaf very yellow progressing towards the centre of the leaf also it turns black after. Not like nute burn which turns the tips brown!

All that calcium is probably hindering the Zn uptake.

1656142308124.jpeg
 
OldMedUser

OldMedUser

Well-Known Member
Nutty sKunK said:
Looks like Zn def to me. Cu def usually makes the tips of the leaf very yellow progressing towards the centre of the leaf also it turns black after. Not like nute burn which turns the tips brown!

All that calcium is probably hindering the Zn uptake.

View attachment 5154270
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His leaves don't look anything like a zinc deficiency tho. I doubt very much that it's a copper excess causing it but I'm pretty sure it's not low Zn. I've had that and treat my plants a couple times each grow with added Zn and other elements to try and make sure problems like these don't arise. Not sure how much difference it makes but makes me feel better. :)

Zinc.jpg

Excess Ca blocks a few things but Zn isn't listed as being blocked by that. Could be one or more of the other things if Ca is the culprit but I've seen a lot of guys on here that claim to use lots of calmag not show problems like this. Half the time it's pH out of whack that screws things up but it's gotta be pretty far out to real screw things up. Hydro is so much easier to get the real pH than soil or even soilless grows. A good flush helps to reset pH levels in pots but is such a PITA.

See clue 8.

Calcium.jpg

:peace:
 
Nutty sKunK

Nutty sKunK

Well-Known Member
OldMedUser said:
His leaves don't look anything like a zinc deficiency tho. I doubt very much that it's a copper excess causing it but I'm pretty sure it's not low Zn. I've had that and treat my plants a couple times each grow with added Zn and other elements to try and make sure problems like these don't arise. Not sure how much difference it makes but makes me feel better. :)

View attachment 5154288

Excess Ca blocks a few things but Zn isn't listed as being blocked by that. Could be one or more of the other things if Ca is the culprit but I've seen a lot of guys on here that claim to use lots of calmag not show problems like this. Half the time it's pH out of whack that screws things up but it's gotta be pretty far out to real screw things up. Hydro is so much easier to get the real pH than soil or even soilless grows. A good flush helps to reset pH levels in pots but is such a PITA.

See clue 8.

View attachment 5154287

:peace:
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Maybe not Zn def but a micro nutrient is responsible. Too much copper may be. It is toxic in small amounts but hard to say.

Calcium does affect. The mulders chart I posted is how all nutrients interact with one another.
 
T

Treesomewanted77

Well-Known Member
Strawberrygrowin said:
I’m on my 3rd grow cycle and my veg always suffers from TERRIBLE magnesium deficiency, I started with filtered water had this issue found out that filtered water strips the SOIL and will not allow sufficient cal/mag to enter the plant, I switched to city tap water PH comes out at 7.5 I bring it to 6.5 with GH PH DOWN but to no avail same ISSUE, I looked at my water analysis and I see the calcium to magnesium ratio is off leaning more towards calcium then the magnesium and I know more then one or the other can and will lock out the other I am so ready to cut my losses throwing everything but the kitchen sink at my plants I’ve tried epsom and TSP CAL/mag (no nitrogen) my battle here is finding a balance with my water but I JUST DONT KNOW WHAT TO DO DO PLEASE HELP ME <3
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Your using soil. Don’t PH it down to 6.5 every time just use it straight out of the tap the soil is a buffer so I wouldn’t even check the ph when using soil.
 
S

Snickerpus

Active Member
Strawberrygrowin said:
I’m on my 3rd grow cycle and my veg always suffers from TERRIBLE magnesium deficiency, I started with filtered water had this issue found out that filtered water strips the SOIL and will not allow sufficient cal/mag to enter the plant, I switched to city tap water PH comes out at 7.5 I bring it to 6.5 with GH PH DOWN but to no avail same ISSUE, I looked at my water analysis and I see the calcium to magnesium ratio is off leaning more towards calcium then the magnesium and I know more then one or the other can and will lock out the other I am so ready to cut my losses throwing everything but the kitchen sink at my plants I’ve tried epsom and TSP CAL/mag (no nitrogen) my battle here is finding a balance with my water but I JUST DONT KNOW WHAT TO DO DO PLEASE HELP ME <3
View attachment 5154324View attachment 5154325View attachment 5154326View attachment 5154327
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The only place where I see things which clould be described as magnesium deficiency is top right corner of the last picture. But it does neccesary mean you are lacking magnesium, could be pH or light as well. You might have deficiency symptoms due to environment, but your plants are looking fine and that lime green top might be just fast growth. Trace element deficiency is rare and calcium excess will antagonize macro nutrients as first. Too much of useless single deficiency pictures on the net, when figuring out the culprit is the thing which should be issued as first.
 
G

GrodanLightfoot

Well-Known Member
20220408_110013.jpg

Puffy, crusty ass blue plants with plastic terpenes are taking over the cannabis world, thanks to CALCIUM.

20220523_223625.jpg

Next time you hear a youtube podcaster recommend calcium for cannabis, punch him in the face through your screen. That'll show em, once we punch out enough computer screens and growers can go back to reality, where weed is sticky and blows thick smelly clouds, not wispy calcium coated puffs of chalk terps . The internet has officially killed Cannabis, with such a large percentage of the weed being grown today being calcium toxic to the point of congenital DNA inactivation.


To anyone growing dank who needs help getting behind the anti calmag movement: Grow some absolute dank in a 15 gallon pot. Wait until halfway through flower. Dump 2 cups of Sta-green bone meal and water in. Within 2-3 hours your strains will have been ruined. Try taking cuts, try making seeds. The flavor, high and medicinal value is ruined in the offspring, too.



Every grower who exists in the real world owes it to themselves to learn this lesson: Calcium fucks up your weed. There's been a conspiracy to commercialize cannabis. These two facts are highly linked. Skunkman Sam was a skunk exterminator for pharmaceutical efforts. They've been stripping skunk out of weed with bad grow info ever since they found out thiol based cannabis is curing diseases, and the myrcene pinene crap, and especially the chalky plastic urinal cake garden hose calcium bud, is actually causing diseases..
 
S

Strawberrygrowin

Member
Strawberrygrowin said:
I’m on my 3rd grow cycle and my veg always suffers from TERRIBLE magnesium deficiency, I started with filtered water had this issue found out that filtered water strips the SOIL and will not allow sufficient cal/mag to enter the plant, I switched to city tap water PH comes out at 7.5 I bring it to 6.5 with GH PH DOWN but to no avail same ISSUE, I looked at my water analysis and I see the calcium to magnesium ratio is off leaning more towards calcium then the magnesium and I know more then one or the other can and will lock out the other I am so ready to cut my losses throwing everything but the kitchen sink at my plants I’ve tried epsom and TSP CAL/mag (no nitrogen) my battle here is finding a balance with my water but I JUST DONT KNOW WHAT TO DO DO PLEASE HELP ME <3
View attachment 5154324View attachment 5154325View attachment 5154326View attachment 5154327
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twentyeight.threefive said:
How often are you watering those?
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2-3 days apart typically
 
rkymtnman

rkymtnman

Well-Known Member
like @Jcue81 said foliar spray them with epsom salts two times at lights out.

Mg is the most common deficiciency: it would take you 24 48 hrs to figure out if it is indeed Mg. if not, then go to plan b
 
Kassiopeija

Kassiopeija

Well-Known Member
GrodanLightfoot said:
View attachment 5154374

Puffy, crusty ass blue plants with plastic terpenes are taking over the cannabis world, thanks to CALCIUM.

View attachment 5154375

Next time you hear a youtube podcaster recommend calcium for cannabis, punch him in the face through your screen. That'll show em, once we punch out enough computer screens and growers can go back to reality, where weed is sticky and blows thick smelly clouds, not wispy calcium coated puffs of chalk terps . The internet has officially killed Cannabis, with such a large percentage of the weed being grown today being calcium toxic to the point of congenital DNA inactivation.


To anyone growing dank who needs help getting behind the anti calmag movement: Grow some absolute dank in a 15 gallon pot. Wait until halfway through flower. Dump 2 cups of Sta-green bone meal and water in. Within 2-3 hours your strains will have been ruined. Try taking cuts, try making seeds. The flavor, high and medicinal value is ruined in the offspring, too.



Every grower who exists in the real world owes it to themselves to learn this lesson: Calcium fucks up your weed. There's been a conspiracy to commercialize cannabis. These two facts are highly linked. Skunkman Sam was a skunk exterminator for pharmaceutical efforts. They've been stripping skunk out of weed with bad grow info ever since they found out thiol based cannabis is curing diseases, and the myrcene pinene crap, and especially the chalky plastic urinal cake garden hose calcium bud, is actually causing diseases..
Click to expand...
So how would you set a somewhat optimal Calcium-to-Boron-ratio for Cannabis? The articles range is a bit broad (100:1 - 12.000:1)
Many bottled fertilizers or soils seem to be rather on the lower end regarding Bor... any (organic) product recommendations?
 
Hollatchaboy

Hollatchaboy

Well-Known Member
GrodanLightfoot said:
View attachment 5154374

Puffy, crusty ass blue plants with plastic terpenes are taking over the cannabis world, thanks to CALCIUM.

View attachment 5154375

Next time you hear a youtube podcaster recommend calcium for cannabis, punch him in the face through your screen. That'll show em, once we punch out enough computer screens and growers can go back to reality, where weed is sticky and blows thick smelly clouds, not wispy calcium coated puffs of chalk terps . The internet has officially killed Cannabis, with such a large percentage of the weed being grown today being calcium toxic to the point of congenital DNA inactivation.


To anyone growing dank who needs help getting behind the anti calmag movement: Grow some absolute dank in a 15 gallon pot. Wait until halfway through flower. Dump 2 cups of Sta-green bone meal and water in. Within 2-3 hours your strains will have been ruined. Try taking cuts, try making seeds. The flavor, high and medicinal value is ruined in the offspring, too.



Every grower who exists in the real world owes it to themselves to learn this lesson: Calcium fucks up your weed. There's been a conspiracy to commercialize cannabis. These two facts are highly linked. Skunkman Sam was a skunk exterminator for pharmaceutical efforts. They've been stripping skunk out of weed with bad grow info ever since they found out thiol based cannabis is curing diseases, and the myrcene pinene crap, and especially the chalky plastic urinal cake garden hose calcium bud, is actually causing diseases..
Click to expand...
E6A57EAD-E8BB-4E87-85AA-5212F7030261.gif
 
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