Cal mag deficiency?

Sticky Bandit

Well-Known Member
If it's just the bottom leaves I wouldn't worry too much assuming your pH is within limits
You can check the soil dampness by lifting the pot to check if it's caused by over watering
You can also foliar spray with Epsom salt @1 heaped teaspoon/gallon which is pretty safe to help boost magnesium levels needed for LED lighting. I also make calcium acetate (I think it is) with vinegar and crushed eggshells and add a teaspoon/gallon to my nutrient mix once or twice a week
What do the whole plants look like?
 

Drewhefner

Member
If it's just the bottom leaves I wouldn't worry too much assuming your pH is within limits
You can check the soil dampness by lifting the pot to check if it's caused by over watering
You can also foliar spray with Epsom salt @1 heaped teaspoon/gallon which is pretty safe to help boost magnesium levels needed for LED lighting. I also make calcium acetate (I think it is) with vinegar and crushed eggshells and add a teaspoon/gallon to my nutrient mix once or twice a week
What do the whole plants look like?
It won’t let me post the pics of them right now
 

Drewhefner

Member
If it's just the bottom leaves I wouldn't worry too much assuming your pH is within limits
You can check the soil dampness by lifting the pot to check if it's caused by over watering
You can also foliar spray with Epsom salt @1 heaped teaspoon/gallon which is pretty safe to help boost magnesium levels needed for LED lighting. I also make calcium acetate (I think it is) with vinegar and crushed eggshells and add a teaspoon/gallon to my nutrient mix once or twice a week
What do the whole plants look like?
Here we go this is them now
 

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Drewhefner

Member
They look pretty healthy apart from the leaf coloring, a foliar spray with Epsom Salt won't hurt and may fix your issue :)
There are a number of possible contributing factors like air flow, soil/medium, pH, lights, temp, humidity etc
Where would I get foliar spray with epsom salts from ? Any recommendations on which specific
 

Sticky Bandit

Well-Known Member
You make it yourself, in a spray bottle. Spray at lights off.
1tsp per gallon.
I add it with every watering.
This is exactly what I do :)
I read you can go up to 1 tablespoon/gallon for initial spray but not too much on chunky buds as water sprays can cause rot
Epsom salt, also known as magnesium sulfate can be purchased at your local supermarket, my wife sometimes uses a whole pack in the bath as bath salts
 

Drewhefner

Member
This is exactly what I do :)
I read you can go up to 1 tablespoon/gallon for initial spray but not too much on chunky buds as water sprays can cause rot
Epsom salt, also known as magnesium sulfate can be purchased at your local supermarket, my wife sometimes uses a whole pack in the bath as bath salts
Okay I will be trying this thank you
 

Drewhefner

Member
This is exactly what I do :)
I read you can go up to 1 tablespoon/gallon for initial spray but not too much on chunky buds as water sprays can cause rot
Epsom salt, also known as magnesium sulfate can be purchased at your local supermarket, my wife sometimes uses a whole pack in the bath as bath salts
Do I spray or water them ?
 

Sticky Bandit

Well-Known Member
Are you keeping the moisture level consistent by checking the pot weight? That could be a sign of overly wet roots
Do you have a pic? I had some trouble with watering and changed to hempy buckets with coco to simplify matters, never looked back :)
 

Drewhefner

Member
Yes I have making sure it’s not heavy before I water and soils dry and it’s happening with my coco and fox farm soil
 
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