Cal mag deficiency?

Star Dog

Well-Known Member
Since reading the reply’s

I raised the light about 18in
Flushed all with tap water
Trimmed all damaged leaves

re watered with 5.8 tap at 1.0ec nutecal mag

they look a lot better

thanks for the input
Are you giving them a good soak, you want it pissing out of the bottom of the pot, it's essential for good growth I can't emphasise it enough.
Eta... Are you avoiding run off because your pots are on the floor, you want them in saucers/tray for run off.
A slanted tray works fine, if you use saucers don't let the plants stand in the run off.
 
Ran about 3gal thru 9 3 gallon pots

the soaking and run off is something that I’ve been seeing in threads as important so I’m really trying to understand that more

it’s a fine line between soaking and runoff and pythium , rhizoctonia or root rot
 
Are you giving them a good soak, you want it pissing out of the bottom of the pot, it's essential for good growth I can't emphasise it enough.
Eta... Are you avoiding run off because your pots are on the floor, you want them in saucers/tray for run off.
A slanted tray works fine, if you use saucers don't let the plants stand in the run off.
Week 8 veg and had alot of problems on my first coco run

soaked and got root rot so I’ve been keeping them a little airy

but yea, all 9 have saucers and feed to runoff about 10%

now I’m seeing how moisture really is important for ec and ph regulation

can’t wait to master coco tho

thanks I read ur comments and keep me comin
 

getogrow

Well-Known Member
Ran about 3gal thru 9 3 gallon pots

the soaking and run off is something that I’ve been seeing in threads as important so I’m really trying to understand that more

it’s a fine line between soaking and runoff and pythium , rhizoctonia or root rot
That "fine line" does not exist on this website. Supposedly if you just keep watering with a low ec then they will be fine. "coco cannot be overwatered" is pretty much what they say around these parts. its a hydro medium.
 

Doug Dawson

Well-Known Member
Unfortunately a lot of so-called growers call it a calmag deficiency and recommend calmag for everything........when in reality it's either one or the other.
I would agree, they say calmag like it's one thing instead of realizing it's calcium and magnesium. More over many are using tap water full of calcium and adding calmag not realizing that too much calcium will lock out magnesium. They identify it as a calmag deficiency and pour more calcium into the mix making it worse. Tap water users need to learn that Epsom Salt is their friend.
 

getogrow

Well-Known Member
Forget the notion of root rot I've never seen it my life.
Thats hard to believe , we have all seen root rot once or twenty times. You may not have looked at the roted roots but surely you have seen an overwatered plant?
Thing with that is we never actually see it because we fix it before its deadly. Root "rot" turns into dead roots in a matter of a day or two of drying out. Its never a big deal if you fix it.
 

Star Dog

Well-Known Member
Thats hard to believe , we have all seen root rot once or twenty times. You may not have looked at the roted roots but surely you have seen an overwatered plant?
Thing with that is we never actually see it because we fix it before its deadly. Root "rot" turns into dead roots in a matter of a day or two of drying out. Its never a big deal if you fix it.
Tbh I thought it was bad conditions/keeping/dwc type growing that caused it, I used pot culture/aqua trays +100% perlite for years which requires the pots to stand in nutrient with no rot problems and I was far from experienced.

I can't remember the exact length of time but for years I kept a mother in whats basically a auto pot so it had its wet feet for most of its life with no problems it was 5/7 years old when the authorities snuffed it?

To the best of my knowledge I've never had a problem with it, or not that I've observed anyway?

A myth used to keep us putting our hands in our pockets lol :-)
 

Doug Dawson

Well-Known Member
Tbh I thought it was bad conditions/keeping/dwc type growing that caused it, I used pot culture/aqua trays +100% perlite for years which requires the pots to stand in nutrient with no rot problems and I was far from experienced.

I can't remember the exact length of time but for years I kept a mother in whats basically a auto pot so it had its wet feet for most of its life with no problems it was 5/7 years old when the authorities snuffed it?

To the best of my knowledge I've never had a problem with it, or not that I've observed anyway?

A myth used to keep us putting our hands in our pockets lol :-)
It's actually pretty common. That rotten egg smell when someone up pots. Just google "roots smell bad when up potting" and view the about 5,090,000 pages about it, lol. I know because I googled it one day looking for info to help someone. I have not experienced it my self but it is apparently pretty common.
 

Joncoh101

Well-Known Member
Hey guys,

I’m wondering if this is cal mag deficiency? I know my temp is a little high at 85deg and my last fert was about 1.5ec so that’s a little heavy but I wanted to post and get some options!

thanks a lot

coco8wks in veg with led


View attachment 4832492
Without a doubt in my mind this is high temps. Vapor pressure deficit has got to do with the fact that theres an inverse relationship between heat and humidity. Temps go up, humidity drops. Temps drop, humidity climbs. The vapour pressure deficit has to do with the fact that as temps increase, humidity drops and subsequently the area around the leaves becomes less humid, thus more transpiration through the stomata and the plant dries and burns.

With the vapour pressure deficit, the plant is taking up water (and therefore nutes aswell) at a quicker rate from the roots to compensate for the lost water through the leaves. And thus a whole host of issues start. Best to try and increase ventilation/ extraction or introduce cooling which can be pricey so only a few of us can do that. Best of luck bro
 

Joncoh101

Well-Known Member
Also, always important to ensure that each watering/ feeding you are testing you PH to ensure its between 6 and 7
 

getogrow

Well-Known Member
Every single plant that is overwatered has "root rot" Its VERY common....probably the most common problem we see around here. You have both seen it 100 times on this forum.

Roots need as much air as they do water , so if they are drowning then it will become root rot in a couple days. Let um dry out and its not a problem anymore. Weed loves to be moist so if you got a great medium that holds enough air then i guess you will never see an issue.
 

Star Dog

Well-Known Member
It's actually pretty common. That rotten egg smell when someone up pots. Just google "roots smell bad when up potting" and view the about 5,090,000 pages about it, lol. I know because I googled it one day looking for info to help someone. I have not experienced it my self but it is apparently pretty common.
Omg I've just been lucky or dodged a bullet idk, I didn't think/know it was a pot growers issue I've always associated with nutrient based systems.
 

getogrow

Well-Known Member
I am almost sure i can go pull a plant that has root rot to show. I have lots so at least one or two have an issue. If you aint never overwatered a plant then yes you are super lucky and your thumb is dark green. :bigjoint:

It is by far the single most important thing to a successful grow for any plants and by far the most common problem in the weed world too. (when using soil/potting mix) Im positive thats why coco has taken over the weed game in the last 10 years or less. That and the ph being way better then peat.

Im not positive but i guess coco moss holds way less water then peat moss or soil.
 

Doug Dawson

Well-Known Member
I am almost sure i can go pull a plant that has root rot to show. I have lots so at least one or two have an issue. If you aint never overwatered a plant then yes you are super lucky and your thumb is dark green. :bigjoint:

It is by far the single most important thing to a successful grow for any plants and by far the most common problem in the weed world too. (when using soil/potting mix) Im positive thats why coco has taken over the weed game in the last 10 years or less. That and the ph being way better then peat.

Im not positive but i guess coco moss holds way less water then peat moss or soil.
When mixed with 30% perlite there is always O2 at the roots. Some say straight coco but I love my 70/30 mix. Saves me from myself.
 
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