justice8965

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#1

Hey all. Growing in coco, seedling is less than a week old. In EC is around 450, PH 6.2-6.3 In a solo cup. Out EC is 550ish. Daily fertigation. Calmag and light nutrients, plus rhizo. Under CFL bulbs.

One plant has this rust/orange spot on the leaf. The others don't. Any idea what this could be?

 

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growsince79

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#2

quit spraying it

 

justice8965

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#3

I actually just did that with some calmag water, thinking it was a calcium deficiency, but I won't again. Does it look like calcium def to you?

 

growsince79

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#4

Even when I used to run hydro, I never saw any deficiencies in seedlings. I don't do coco just cocoloco. big difference.

 

BabyFarmer

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#5

justice8965 said:

I actually just did that with some calmag water, thinking it was a calcium deficiency, but I won't again. Does it look like calcium def to you?

Click to expand...

This rust just showed on my, 5 wk...

...and I've never sprayed her.

Just fed her the first time this morn. I was wondering a out cal/mag deficiencies too.

 

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justice8965

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#6

Hmm I did flush this coco that's in the cup before I put the seedling in there, probably diluted the calmag water I used to flush too much. I'll give her some extra calmag for the next couple days

 

justice8965

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#7

BabyFarmer, I'm a first time grower and certainly no expert, but based on all the pics I've been looking at for the past hour, that's almost definitely calcium deficiency.

 

growsince79

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#8

Sometimes overwatering will cause lockouts.

 

growsince79

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#9

BabyFarmer said:

This rust just showed on my, 5 wk...

...and I've never sprayed her.View attachment 1009308View attachment 1009309View attachment 1009310

Just fed her the first time this morn. I was wondering a out cal/mag deficiencies too.

Click to expand...

If that was mine, I'd transplant to a larger full pot.

 

BabyFarmer

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#10

That's in the works as well, gonna go up to a 7gal and fill it to top like... was a rookie error, but it may work out to give her some fresh rich soil. I don't feel she is growing fast, but if I can dial her in before cutting the lights she could be a solid first plant.

 

BabyFarmer

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#11

justice8965 said:

BabyFarmer, I'm a first time grower and certainly no expert, but based on all the pics I've been looking at for the past hour, that's almost definitely calcium deficiency.

Click to expand...

It's what I was thinking...

I like that I let her go until she started "telling me". Seeing it happen is so much more educational than blindly preventing it because somebody said so... lol

I actually almost order and started cal/mag last week... but everyone says to wait until they tell you what they want before making a change.

 

Beachwalker

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#12

growsince79 said:

Even when I used to run hydro, I never saw any deficiencies in seedlings.

Click to expand...

+1 Never

Edit: drop your pH a little 5.9 - 6.0 for best results good luck

 

justice8965

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#13

Beachwalker said:

+1 Never

Edit: drop your pH a little 5.9 - 6.0 for best results good luck

Click to expand...

Will do, thanks!