Medic needed! Rust spots, yellow leaves curling down

Sm420ke

Sm420ke

Member
I water once every 2-3 days or till the soil is dry. They're under 2x 110 Watt LED's 20 inches from the plant's surface. Using a fan that's blowing above the lights. (The smaller one had a problem with over watering)

Temperature is around 74-79. Soil is bio-bizz all mix. Didn't feed yet, as my pH meter should be here tomorrow.

Both plants are in week 3.

Waiting on my pH meter, so I don't know the pH values.

Seeds are 24K Gold and Kosher Cookies from DNA genetics

Thanks for your time & assistance!

Have a good day!

edit: MG deficiency is my own guess? But how do i solve it? :-)
 

Attachments

Last edited:
myke

myke

Well-Known Member
Lights can be too strong. Weird that it’s yellowing already so soon. Are you giving it straight water?
 
Sm420ke

Sm420ke

Member
myke said:
Lights can be too strong. Weird that it’s yellowing already so soon. Are you giving it straight water?
Click to expand...
Think i should raise the lights a bit?
Yeah, straight water, nothing else.
Plan on starting feeding within 2 days, as my pH meter should arrive soon.

Cheers for answers :-D
 
Mmcary82

Mmcary82

Well-Known Member
Rub the rust spots and look at your fingers, if none come off it’s not fungus it’s a nute deficiency most likely cal or mag..but if I had to guess your ph is too low..I’d add a teaspoon of baking soda per 16fl ounces of water to raise ph
 
Mmcary82

Mmcary82

Well-Known Member
Mmcary82 said:
Rub the rust spots and look at your fingers, if none come off it’s not fungus it’s a nute deficiency most likely cal or mag..but if I had to guess your ph is too low..I’d add a teaspoon of baking soda per 16fl ounces of water to raise ph
Click to expand...
The nute deficiency is most likely very acidic soil it’s safe to use baking soda in conjunction with that I would folior feed with 2 teaspoons of epsom salt per liter of water.. that should be the ticket. Get your ph up
 
Sm420ke

Sm420ke

Member
Mmcary82 said:
The nute deficiency is most likely very acidic soil it’s safe to use baking soda in conjunction with that I would folior feed with 2 teaspoons of epsom salt per liter of water.. that should be the ticket. Get your ph up
Click to expand...
my pH up & down + my pH meter should be here by tomorrow, latest tuesday.

I also ordered some cal-mag, that should be here by wednesday, will that be ok instead of the epsom salt?

I'll check what the values are. Tap water should have a pretty high pH in my country (around 7.0) from what i've researched.

Thanks for the input guys, much appreciated :mrgreen:
 
Sm420ke

Sm420ke

Member
myke said:
How long have they bin in those pots?
Click to expand...
Soil is brand new yeah. I raised the lights a few inches, see if it changes anything.

The biggest one of the two plants, has been in these pots her entire life. The smaller plant, was re-planted into this one just before new years (12/30).
 
Sm420ke

Sm420ke

Member
Mmcary82 said:
Rub the rust spots and look at your fingers, if none come off it’s not fungus it’s a nute deficiency most likely cal or mag..but if I had to guess your ph is too low..I’d add a teaspoon of baking soda per 16fl ounces of water to raise ph
Click to expand...
Nothing comes off from the leaves.

Must be a deficiency I guess :mrgreen:

Thanks for your time :)
 
myke

myke

Well-Known Member
Peat based soil is low ph so they add lime to bring it up so we dont need to ph our water.as @Mmcary82 said,you ph in the soil is low.Plant cant get to the Magnesium thats there.So add the baking soda and see.
 
You must log in or register to reply here.
Top