Indoor Discoloured leaf - Diagnosis?

[HotBunz]

That is not a Cal/Mag def. It is on the edge of nute burn. Clues are the burnt rim of the leaf and the tell tale clawing. A Cal/Mag deficiency looks like rust sprinkled across the leaf. Also what is you PH?

 

[Dr. Babnik]

Ah! Nute splash! That is a good point. I know there was a few drops on the leafs after watering.

Is Advanced Nutrients good products?
For calmag I find 2 relevant products from AN:
Sensi Cal Mag Xtra
Revive

From Canna, I can get Ca and Mg as individual solutions.

 

[Dr. Babnik]

I think @Waira is right. I have probably fed her too much. Super Skunk tolerated the nute dose, but there are brown specks distributed on the leafs of my White Widow. She is growing vigorously though. Both girls are on day 30. The pics are the Widow.

Image

• Dr. Babnik
• Apr 11, 2016

WW #2b, day 30

• Dr. Babnik
• Apr 11, 2016
• 3

WW #2c, day 30

• Dr. Babnik
• Apr 11, 2016

 

[Waira]

I didn't think this was a nute burn thing, but I see what Hotbunz means; However, the very tips will show yellowing/necrosis first when it's nute burn, before edges...looks good mate, I so no further tip claw on leaves (usually a N tox. symptom, but not always), or further spotting,... it's not splash damage either,...
>> Hotbunz, this is what caught my eye for possible Ca defc., not the edge damage, which is too generic a symptom when that minimal to be sure of the cause,..->

 

[Dr. Babnik]

WW, leaf

• Dr. Babnik
• Apr 9, 2016

What is wrong here?

UPDATE DAY 37.
White Widow auto.

The discoloured leaf is now quite necrotic. Can I remove it?

Image

• Dr. Babnik
• Apr 16, 2016

Another leaf has some purple coloured veins. Is it normal?

White Widow #1, day 37. P

• Dr. Babnik
• Apr 16, 2016

Vein with coloration