Quote Originally Posted by GaGrown
Are you saying that you can use a 400 watt bulb in a 1000 watt galaxy ballast? Yes if switched down or you can run a 600 at the 400 W.I may be confused as to what you want to accomplish,but I use a 1000 wat MH with the ballast in veg and use the dimmer in that phase of the plants life and full power at flowering. All this is with a 1000 watt bulb.Right, I want to do that.


You can't turn the ballast to low setting and put in a 400 or 600 watt lamp. Am I on the right track as to what your looking to do? well I want to do that too as well as use either HPS or MH at either wattage.
Understand ? Eventually I will probably just dim the 1000.

That brings up the question I forgot to ask. Does dimming that 1000 watt bulb have an increase/decrease of PAR life?