I've got a Sun System Harvest Pro Elite 1000 watt MH/HPS magnetic ballast with a large Adjust-A-Wing with the large Super Spreader. I don't remember the brand of the bulb but it was not a name brand like hortilux. The issue is the bulb is cycling off for a period of about 30 min. I'm not sure how often it is occurring but I set it up yesterday and turned it on. I went back out a few hours later to check my temp and the lights core was glowing but the bulb was not illuminated. I switched of the ballast and turned it back on immediately and the bulb came right on. I went back out at lunch to check on it and it did the same thing while I was looking at it but I left it alone this time. I went back out about 30 min later and it was on. I went out there earlier and it went out again. Everything was supposed to have just a few hours on it and was clean and it the origional boxes. I'm leaning towards needing a new bulb but wanted to come here before spending money on something that may be normal break in. I read on the Sun Systems FAQs that new bulbs may cycle for the first bit of use. Thanks again for taking the time to help me out in this little endevor.