That was Friday though and its not Sunday night

I don't know if leaving the sterilizing stuff in this long is a problem. Also I didn't fill the corny to the brim as the instructions only said 10l for a 25l container. Iv sloshed the water around a lot but I don't have gas or a tap yet (its ordered and paid for and in the post) so I cant clean out the posts by flushing the sterilising solution through them. I'm worried that this might be a problem.
I will need to prime the Corny as like I say I don't have the gas yet (advice?).
Some help much appreciated.
Cheers.