Is the noise from the ballast or the bulb? I had a de 250 watt with dirty connection at the bulb and it made a funny noise squeal noise. But it was real bad touched the end cap and it fell apart.
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360 gallon sps reef, 180 gal sump, bubble king supermarine 300, 4xmp40Wes, 2 x 6215 tunze waveboxes, 4 ghl mitras
360 Reef Tank
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