I've used bottled water and mg soil before. Nothing great but it worked. I'm guessing you're getting no light. Like said get some flourescents as close as possible without burning. Make sure you're cup can drain water(no standing water) Don't add extra nutes at this stage. If you can carefully cut the bottom of that cup and place it a larger pot like someone said you might get a little bit out of it but it will be stunted. It can be some practice for next time anyway.READ,READ READ. There's some good info here
I seriously guessing you're getting absolutely no light to the plant for starters
How big and close are your lights? Are you adding nutes also?
Good luck
I seriously guessing you're getting absolutely no light to the plant for starters
How big and close are your lights? Are you adding nutes also?
Good luck