Calcium deficiency vs Septoria? Or something else?

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joebe1

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I first noticed the discoloration in the leaves yesterday but left it and it's gotten worse over night. After some research into what it may be I thought the two candidates that look most similar are Septoria or Calcium deficiency, but I'm very new to indoor growing and would love a second opinion. Any ideas are greatly appreciated!

The strain is Cherry Grapefruit and It's only in the first week of growth. The humidity ranges from about 70-80% and temp ranges between 21-27 celcius.

As its still very early I haven't added any nutrients, could this be the issue?
 
Calcium deficiency vs septoria or something else
Gmix

Gmix

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What medium are you using
Have you feed them anything
How close is the light , what wattage is it & is it dimmed
 
J

joebe1

10
3
What medium are you using
Have you feed them anything
How close is the light , what wattage is it & is it dimmed
Im just using organic potting soil mixed with some perlite.
I haven't fed them anything yet, but I've got some CalMag arriving tomorrow as I'm thinking this could be the issue?

The light is 600W set at about 50% brightness and its about 30-40cm away from the plants
 
Gmix

Gmix

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Im just using organic potting soil mixed with some perlite.
I haven't fed them anything yet, but I've got some CalMag arriving tomorrow as I'm thinking this could be the issue?

The light is 600W set at about 50% brightness and its about 30-40cm away from the plants
Ah right
The lights to close
Raise it to around 25-36”

Don’t add cali mg or food your plants to young and doesn’t need it not in soil

Btw you don’t need to ph organic grows that’s the one benefit I love about organics as I loathe measuring out stuff
 
Oldchucky

Oldchucky

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Is that 600 Tru watts pulled from the wall or 600 claimed watts from a misleading manufacturer? A true, 600 W pulled from the wall light is an expensive piece of an equipment! Probably about a buck a watt! There is a big difference between the two! So be careful!
 
Last edited:
J

joebe1

10
3
Ah right
The lights to close
Raise it to around 25-36”

Don’t add cali mg or food your plants to young and doesn’t need it not in soil

Btw you don’t need to ph organic grows that’s the one benefit I love about organics as I loathe measuring out stuff

Thanks for the advice, I've moved the lights further away but clearly some damage has already been done.

Hopefully still recoverable from here :)

IMG 5247
 
Oldchucky

Oldchucky

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65 watts from the wall! Make sure people know this when you ask for advice! Should work for seedlings though! I just hate seeing people thinking they are getting a deal when they are getting conned! You’ll do all right!
 
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