Hey guys,
I have completed 2 successful grows with a 400w system. When I built the room I was running low on money and got a OptiLUME bulb since it was 40 dollars and the Hortilux was 100 at my local shop.
Specs on the OptiLUME are:
Shape: ET18
ANSI Ballast: S51
Temp: 2,000K
Lumens: 50,000...