is my plant sick?

Have 3 plants in 3 gal pots.
1/2 seasoil 1/2 promix
Planted the seeds 16 days ago.. gave them their first feeding on day 14 wiith: advancesd nutrients:grow/micro/bloom .. and I noticed spots and some "rust".. could this be a nitrogen deficiency?

looks like it may be a slight cal mag prob. possibly nute burn. but shes not looking bad at all.

nute burn.....lay off the nutes while so young

Are you using nutrients ? what type if so

Damnit! I'm Using advanced nutrients. Grow micro bloom. With calmag and a little kelp in there too..

Alright. Ill lay off the nutes untill she loooks like she wants some.

Thanks guys!