cheddar1985
Well-Known Member
U of all lads should know the answer to that yorkie unless the 400 is a mh id just say the 600 burns at higher levels than the 400 mate hence why the is more heat dispatched from your 6 mateRight so I have two magnetic ballasts, one 600w and one 400w.
They are both running side by side HPS bulbs.
Can anybody explain why when I look directly at my bulbs the 600w looks orange and the 400w looks blue?