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

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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