Like
@vostok mentioned above ... Go get some CFL bulbs throw them close and leave on. You can run this temporarily and give your plants a chance to survive. Run at 24/0.
CFL bulbs run at very low electrical use , so it will pan out in the long run. This way if you got to leave they are ok. Plus , stop heavy watering ... Mist them every few days , no need to drown them ... They are young.
Once you setup your tent or whatever , you can start the 18/6 light cycle. These young seedlings wont suffer too much from your wonky light schedule ( some light , no light , i forgot ) just stick to plan.
I start all of my seedlings under good ol CFL - just to get the " seedling stage " over with then when they get maybe second set of tru leaves or so .... I move them to their Tent home.