I bought a 72" fixture off of ebay and have since replaced two of the three ballasts. I still need to get one more new one. Wow what a difference between the brightness of the lamps with the two new ballasts. I then replaced all three lamps with new higher quality ones and again was amazed at the difference in color temp. If I was to do it over I would definitely buy something of better quality from the get go as it would be well worth it. I have ended up spending just as much as I would have on a better fixture and my corals had to wait 6 months for the proper lighting.
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