Help! Brown-orange spots on leaves

[shitaka]

hello there,
the plant is month and week old. i'm using all-mix soil and 600W hps.
it looks pretty healty besides some brown\orange spots on some of the leaves ( old and new leaves both).
doesnt look like any deficiency on guides...
could use some help identify what is the problem.
Thank you!

 

[arteekay]

Any chance it's just a bit of damage from when you were tying down? Could you zoom out and give us a better idea what the entire plant looks like? Top down and from the side.

The new growth we can see here looks to be healthy, to me at least. We can some similar marks from bending the leaves up a bit to much while trying to get into the plant to water.