What type of deficiency?

[Rrains007]

[Xena]

Info please. Grow medium, age, nutes, ph, temp & Rh, photo of whole plant would help too.

[Farmbuck]

Like Xena is saying more informations please.

[GreenAlchemist]

It almost looks like light stress (judging quickly from the colouring and the curled edges) but without any of the extra information mentioned above by the other gents, it’s hard to narrow it down, and give useful information that will fix the issue.

As Xena mentioned, if you write down that info with a picture of the whole plant, it would help us narrow it down significantly, and help getting her back in health and thriving.

Also, I’m curious as to the light being used and what your feeding/flush schedule looks like, as this has been what caused many similar looking issues in my garden.

[Cali]

Looks like light burn. Go to the GWE site and compare. I had similar issue with a new LED light I purchased turn out when I raised the light to the max height I could the issue stopped. Like other said give some info on your grow style and other specs.

[gbauto]

Pics of the complete plant helps with a diagnosis.
We need to see both old and new growth to help identify the issue.
Providing as much info on your grow also helps.

[Rwise]

Its missing its plant! As far as the bad, looks like burn from lights or nutes, as stated much more info needed!

[Rrains007]

Sorry for the lack of info. This plant is 4 weeks old in veg. I'm running house and garden nutes. The leaves that are affected are towards the bottom the plant. Temp is 78 day and 70 night. I'm running sun system 630s. Lights are currently 4 feet above the canopy. Ph is at 6.3 and the is 70 day and 55 night.

[gbauto]

Looks like a P deficiency starting.
Can you give us some details on your feed regimen?
I also see that your room temps are too cool.
The plants will respond better if you can get them in the upper 70's with HID.

[Rrains007]

gbauto it is 78 day. I follow all house and garden schedule just as directed and the same way i have for the past 4 years. The only thing is this is a new room where I'm using well water that passes through a pre evolution 200 system and then through a growonix 1000x r.o system. It was taking calcium out and I knew that deficiency so i added cal mag and that issue went away. Now this is starting to happen. I think it's due to the water because I've never had this issue before.

[Cali]

Sounds like you have it under control you just need to water like before and if the issue goes away then problem solved.

[Rrains007]

Cali. The problem is that I'm watering it like before. The only big variable from the past is water source

[Cali]

Exactly only difference is water source change it back and if the problem goes away then problem solved. That what I meant.

[GreenAlchemist]

From looking at the plant, it’s definitely a mobile deficiency working it’s way up the plants fan leaves. If the water is new, and that’s the only new variable, it’s definitely off-set something.

I were you in this situation, I would Ph test the soil itself to see the true level (might be a little high), and play around with the Ph during watering. For ‘P’ intake in medium, it’s best around 6.5-6.7 from what I believe, so slightly raising Ph may help give it that little extra bit it needs. Every time I water I change the Ph level slightly within the right ranges, as different nutrients are absorbed better at different Ph levels.
Just my 2 cents towards helping it back to a thriving green state, I left a chart I use to help me remember Ph levels for different nutrients if you’re interested, hope this helps some.
cheers bud!

[Rrains007]

GreenAlchemist thanks for the insight!