1 grow cube, 2 seeds, 1 germinating and 1 has already germinated (NEED ANYONES HELP!)

Right i need anyones help!!, I was germinating 2 seeds in my grow cube, the 1 seed has already germinated but the other wasnt germinating properly it was growing inwards somehow!, So now im germinating a new seed as i want 2 plants in the cube at the same time, But i was just wondering if it would make any difference If i dont feed light to the seed that is already germinated and planted as it will soon sprout and wait for the other seed to germinate and plant it, will it make a massive change to the plant if i keep it waiting until the 2 are sprouted, and then start them on the 20/4 light cycle?

IF YOU DON'T UNDERSTAND MY QUESTION PLEASE COMMENT AND I WILL DO MY BEST TO EXPLAIN MY SITUATION TO YOU IF YOU ARE WILLING TO HELP!,

Thanks alot everyone,
Happy Toking!!

Y do u need 2 seeds in same cube?

what ever happened?

you should germinate the seeds in a bowl of water and store them in a dark and warm place then come back and check on them in three days time and once the taproot is exposed gentle place the taproot facing down into the wet rockrool cube and place in propagator under light.

I am really confused on why you would want two seeds in one cube? That seems like a real problem.