Seedling has stopped growing

I'm a new grower, I am starting from bag seed for the first go round, or at least till I get things going I will then start my northern lights seeds. I am running 180 watt flourescents with 6500k. Its a 2X3X5 room with movable lights. Untill today I was running 24 hour light since they popped a week ago. I need to know, do they need some down time on lights right now? How soon till I should start on neuts, about 2 weeks right? I'm going to be moving them into net pots with a drip system (how soon I've heard after 4 leafs?) and hydroton. They were started in Coco, only one has poppoed at this point. I would think it should be bigger, or am I impatient? I am finally seeing a second seed that's germinated.

Northern Lights (Nirvana) is a very strong strain and quite forgiving, i used it before a couple of times and had no problems, even started my 1st grow with NL. Its best if you let your seedlings rest for 6 hours with no light, personally i found that running my lights 27/7 in vegetating slows them down from growing, since root growth is more sufficient when plants rest from photosynthesizing.
What YOU have to do now is make some patience but you will learn that as you go.

Happy growing mate

Something is wrong here bro ,the germination rate is ordinary and the ones that have come up look shit. I think its the seed quality because everything else seems ok.