Sick Cali Orange (pic)

[wickedslick0515]

This is one plant of six and is the only one that is showing problems. I have done a bit af research and belive that it is a Mg deficiency???? As for my set up Ive got one 400 HPS inside of the hydrohut mini with fan blowing constantly over the plants, a 225-250?? Dayton blower that exhausts outside of the room. tems stay between 75-85 peaking around 90. Currently using Scott seedstarting soil, no time release ferts just a bit of phosphorus for beginning root growth. because fox farm is imposibble to get here. Anyways I would just like some confirmation before I epsom salt the girl....
They are also 6 days past breaking soil....

It is my first grow and my entire knowledge of cultivation has been from this forum. Damn I believe its my first post too. Anyways, any info would be greatly appreciated.

As you can see in the pic the larger leaves are curling starting at the stem and moving out. Plant seems to have normal color and is not scorched from the light.....

P.S. Sorry about the huge pic...... was going to resize but im on my friends computer with no photo software.....

At leat you have a good view of the problem...

[chimera]

looks like heat stress to me, there is no way a six day old plant is showing signs of any deficiency.

[SmknVTEC]

Yeah,

Probably heat stress. I would also transplant them to something bigger and that high in p soil could be problematic as well.