rollingrock
Active Member
hi all, i have 2 6000watt ballests CENTURY 220/230 volts uk plug with hps bulbs running and on the caseing it says SON T NAV T
what does this mean????
does it mean i could run either hps or mh, anyone help me out please
what does this mean????
does it mean i could run either hps or mh, anyone help me out please