Please hlep...autofloewering

Can anyone tell what is the cheapest bulb possible I would need to grow five autoflowering plants ?

Thanks,
Mike

I'd say some attention to detail is worth trying, along with some CFLs.

Cheapest is always gonna be the cfl route. Arguably with LED's, but I feel like you'd do better with cfl's. Goodluck.

I grew 5 good crops with CFL'S now I have a 400 watt HPS/MH.

cfls ............