Is this magnesium deficiency ??

K

Komonsense

Member
I believe this is a magnesium deficiency, I’m growing in coco/pearlite/EWC I had used dolomite lime before but the higher ph seemed to have a little effect so I transplanted and did NOT use any dolomite lime. So there’s no cal/mag besides what’s in earthworm castings which I have no clue how much cal/mag is in earthworm castings. I know cal/mag is needed in coco thought the earthworm castings could have enough but it’s not seeming so. I’m also using RO water so there’s no cal/mag in my water that would normally come from tap water. I know magnesium is mobile and this does seem to be effecting the bottom leaves a lot more then the upper leaves they only have a slight discoloration. I have some organic Epsom salts coming today which I will water in but I wanted to confirm this is a magnesium def. Any advice would be appreciated ! 21DB3F87-AB2F-4222-A29B-FECCF99B1E2A.jpeg46A93A81-F96B-4214-81C9-CFE23B249A80.jpegAD5C0637-547C-4FEF-9B5F-EA54908D05A6.jpeg
 
K

Komonsense

Member
Wattzzup said:
Cal/mag isn’t a nutrient or a deficiency

Your couple leaves in the pic look ok to me. Not many people are successful with coco and organic. Another Mr Canuck fan?
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Calcium is a nutrient and magnesium is a nutrient, I said cal/mag to state that I might have had both deficiencies, and if you have none then wouldn’t that indeed be a deficiency?? And not really I’ve seen a few of his vids he’s grown some good and some bad a lot of people local here grow in coco . when mixing with EWC and pearlite and sand and amendments you’re basically making a living soil with coco instead of peat. Im mainly doing it to reduce pests as almost all soil you buy comes with some sort of pests.
 
K

Komonsense

Member
Wattzzup said:
Cal/mag isn’t a nutrient or a deficiency

Your couple leaves in the pic look ok to me. Not many people are successful with coco and organic. Another Mr Canuck fan?
Click to expand...
Calcium is a nutrient and magnesium is a nutrient, I said cal/mag to state that I might have had both deficiencies
Wattzzup said:
My coco came with no pests. Salts for coco, organic for organic soil. Good luck
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my coco also has no pests. I said soil comes with pests. But thanks bud I was mainly asking about the magnesium not what you think I should grow in. Everyone has this opinion on coco with organics for some reason and always talks about the canucks guy, but it actually works very well if you dial everything in correctly it’s great for microbial life almost no pests, great oxygen supply compared to soil, watering is more forgiving. There’s a bunch of people that do it successfully. You know alot of organic soils have coco in them. Along with amendments and pearlite compost etc. Now if I was just growing in straight coco with only some pearlite then yes I would agree salts only. Because of cocos ability to be watered constantly. But I’ve added compost and other stuff where the coco works with them to build a soil like substance bringing along some of the nice qualities that coco has. obviously it’s a different learning curve and somebody new to it will have several problems at first which is why you see a lot of people having trouble because it’s a new thing to a lot of people and they don’t have it dialed in correctly yet. Anyways I just wanted to know about identifying magnesium deficiency. Good luck to you as well.
 
K

Komonsense

Member
blueberrymilkshake said:
View attachment 5107173
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Is this suppose to be condescending?? I’ve never used cal/mag and I only stated I had no cal/mag in my mix. ( Neither calcium nor magnesium) was added do I really have to say it that way or people wanna imply that I’m one of the cal/mag fixes everything fanatics. I stated I had no magnesium or calcium added and that it looks like magnesium is going to be needed. Toxic and no help. Isn’t this forum suppose to be to gain information and learn. I thought Facebook was for trolls
 
J

jaked3800

Active Member
It look pretty healthy, might have had a tiny bit of stress likely from a slight pH issue thus blocking out calcium, magnesium or some other nutrient. And I do somewhat agree with Wattzzup with organics not being for coco. Yes you can pull it off but its a very fragile/sensitive system when it comes to keeping the pH stable for proper nutrient uptake. Also coco is not a very desirable substrate for the benificial bacteria that you want thrivng in organics. But if you mixed different composts in it you have a whole different thing going on that I cant speak for. I experimented quite a bit with 50/50 soil coco mix with added perlite with great resuls. But even that is very sensitive to pH changes caused by the breakdown of organics and the different pH range required for those types of mixes. If you can dial it in every time more power to you, but theres a reason why seasoned growers steer away from it.
 
K

Komonsense

Member
Wattzzup said:
Ok then I would throw them in the trash dude. Is that what you want to hear? Omfg. :peace: Welcome to the list
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jaked3800 said:
It look pretty healthy, might have had a tiny bit of stress likely from a slight pH issue thus blocking out calcium, magnesium or some other nutrient. And I do somewhat agree with Wattzzup with organics not being for coco. Yes you can pull it off but its a very fragile/sensitive system when it comes to keeping the pH stable for proper nutrient uptake. Also coco is not a very desirable substrate for the benificial bacteria that you want thrivng in organics. But if you mixed different composts in it you have a whole different thing going on that I cant speak for. I experimented quite a bit with 50/50 soil coco mix with added perlite with great resuls. But even that is very sensitive to pH changes caused by the breakdown of organics and the different pH range required for those types of mixes. If you can dial it in every time more power to you, but theres a reason why seasoned growers steer away from it.
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Thank you for an intelligent reply with information. Could you elaborate on why coco is not good for the bacteria in organics and don’t the beneficial microbes break down nutrients and make them available to plant at wider ranges ?
 
Robar

Robar

Well-Known Member
solid vid on deficiencies for beginners. Honestly as a life long head my memory isn't the best and I refer back to this from time to time.

Looks like the beginning of a mag deficiency. You can use a calcium/ magnesium supplement or you could use Epsom salts.

*Edit to add more.

I grow in an organic mix and quit using any coco because these are the problems I was having. Peat, perlite, compost, earthworm casting, with some pumice/lava rock, bio char and all the normal amendments is where I have found MY sweet spot. Also when growing in open pots I can't stress mulching enough!

Also I use reverse osmosis water and add cal/mag to 150-175 ppm Happy healthy plants.
 
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blueberrymilkshake

blueberrymilkshake

Well-Known Member
Calmag Pope isn't a jab, he's your friend. Take a breath.

Hybrid organic-salts soil-coco might continue to fuck up your pH though.

Edit: didn't see you weren't using salts.
 
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K

Komonsense

Member
Robar said:
solid vid on deficiencies for beginners. Honestly as a life long head my memory isn't the best and I refer back to this from time to time.

Looks like the beginning of a mag deficiency. You can use a calcium/ magnesium supplement or you could use Epsom salts.

*Edit to add more.

I grow in an organic mix and quit using any coco because these are the problems I was having. Peat, perlite, compost, earthworm casting, with some pumice/lava rock, bio char and all the normal amendments is where I have found MY sweet spot. Also when growing in open pots I can't stress mulching enough!

Also I use reverse osmosis water and add cal/mag to 150-175 ppm Happy healthy plants.
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I like your mix I was looking at peat last night thinking about mixing up a batch with peat instead of coco and comparing. Any suggestions for a good mulch for my current coco mix ?
 
K

Komonsense

Member
Komonsense said:
I like your mix I was looking at peat last night thinking about mixing up a batch with peat instead of coco and comparing. Any suggestions for a good mulch for my current coco mix ?
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I also have some Epsom salts and gypsum coming today I am going to add the Epsom but not the gypsum yet as I don’t wanna put too much calcium in I’ve heard bad things about too much calcium. Or should I add both at the same time I am getting that brown spotting effect calcium def causes on my lower leaves but since it’s on my lower leaves and calcium is not mobile I feel like it’s the lack of magnesium causing it, it’s not that bad yet but defiantly progressing but I feel like it’s the lack of mag causing it not too sure
 
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