Light distance from my seedlings

Seeds sprouted and planted, how far away from plants should I be with my light (MH 400-600 watt )

Sorry indoor grow rm

I would keep light around 2’ away for the 400w and adjust down if it shows signs of stretching


Ok Donald thanks

Sorry to jump in but my seeds have just broken the surface of soil. I have a 75watt LED. How close/far from the seedling should I place the light? Thanks Donaldj