First day popped with weird color?

i'm growing with FFOF soil and Two 40w Fluorescent tubes (for now) I also have a plastic bag with holes in the top covering the cup. When should i take it off? Anyway, i was just wondering if its normal for the sprout to have some strange discoloration. Basically the sprout has some grayish brown spots. thanks guys.


.

Hey guys I think the condition of the sprout is gotting increasingly worse... I've been keeping a close eye on them and it seems that the discoloration has spread and now covers about half of the young sprout. Right now their planted in fox farms ocean forest and about 3-4 inches below two cool white fluorescent tubes. They plants are now about 15 house old. I think it might be nutrient burn from the ffof since it does contain a lot of nutes. So anyway take a look and comment I would really appreciate just knowing a lot more about what's happening and eats likely to happen. Thanks in advanse.

just try to relax. It should be fine, give it a few days and I bet it'll look a lot better.
FF soil is great, let it do it's thing and I'm sure you'll be pleased