420 Magazine Background

Watts and Ballast

Sativass

New Member
I am new to indoor growing, quick question
I have a lumatek digital new ballast ( the purple one) 400 watt, I will be running a 400 watt hps globe (Son-ti Agro).
Does the ballast or the light use any extra watts Or will my draw power from the wall be 400 watts total?
 
Top Bottom