Medic needed! Rust spots, yellow leaves curling down

[Sm420ke]

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?

 

[Sm420ke]

 

[JoeBlow5823]

Looking very hungry.

 

[myke]

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

 

[Sm420ke]

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

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

 

[myke]

yeah must be the light,soil was new?Should have lots of food.Is your water crap?

 

[myke]

How long have they bin in those pots?

 

[Mmcary82]

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]

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

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]

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

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

 

[Sm420ke]

How long have they bin in those pots?

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).

 

[Mmcary82]

Go for 30% runoff and ph the runoff..Do what u want there your plants.

 

[Sm420ke]

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

Nothing comes off from the leaves.

Must be a deficiency I guess

Thanks for your time

 

[Sm420ke]

Go for 30% runoff and ph the runoff..Do what u want there your plants.

Well I don't have any epsom salt in my house, so i was asking a question if the cal-mag would be okay to use instead

 

[myke]

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.