How far from soil + seedling

Hi guys I have a 250w cfl light

Just waiting for my seeds to germinate before I put em in the soil

Can someone please tell how far to av the bulb away from the soil please

And how far to av the bulb away from the seedling when it pops through please

Thanks guys

Start at 12" and see how they handle it, then you can work your way down if need be.

Cfl