Scarlet Sky Thanks for the diagram. Im hoping it was just a faulty bulb and not a ballast prob, but thanks for the diagram. I actaully had it all apart seeing if there was any loose connections.Im glad this bulb works lol. Its like having the sun in my grow area lol. Right now there is a 400watt hps 55,000 lumens , plus 150watt's of cfls about 10,000 lumens. 65,000 lumen's total. Not nothing super amazing but its a nice step up for me.