What kind of seedlings? Auto or photo-periods.
If it's an auto it could start flowering in a week and they need a bit stronger light sooner.
Usually when someone says "a small fluorescent light" then they're talking about a light that's not putting out enough light and the seedlings will be tall and lanky.
I'd do lights at 20/4, and get more than a small light.
A picture wouldn't hurt.
Yikes.
Well something ain't right, at 2 weeks they should be about 10x that size.
If those are autoflowers just yank them and start over.
If photo-periods you might can save them.
If that is coco you should have been feeding them from day one.
If its soil like a Fox Farms then I dunno, I cant really see the leaves and what shape they're in.
what little I can see doesn't look too good though.
maybe list everything you're doing.
type of soil
watering schedule
what kind of seeds, photo/auto
type of bulb in the light
do you have a real grow light if they survive and get bigger because that ain't going to cut it.
I am sure someone will recognize what it might be and chime in.
need more of a close up though.
Those plants look rather tiny and lanky for being 2 weeks old. All the info Nunya asked for would be useful. The light looks a little too high. My lights for veg are usually only 2-3 inches above the plants, or a bit more if I get lazy or don't wanna risk burning the tops.
They need stronger light and good food.
Can see the centers are turning yellow/lime green.
Do you have better lights to use?
Do you have cannabis nutrients?
What kind of soil are you using?
Are the seeds "autos" or "photos"?
We need a list of info from you to help, provided that you do what's recommended from everone.