I got a Marineland Reef-Capable LED
light fixture (24" size) for my tank in July 2011. I loved the way it lit my tank, and it may be what encouraged yellow colony polyps to start growing in my tank. But this fixture died last week! I called the manufacturer, and the nice customer service rep promised to send me a replacement, no charge, even though mine was out of warranty. I think she realized that a fixture that cost > $200 should last more that 21 months.
I got the replacement fixture, and set it up, and my tank is back to being well lit - and hopefully my soft coral polyps are happy, after enduring several days with only dim, yellowish fluorescent temporary lighting.
But I'm worried about the cause of this premature failure, and that it might happen to my new unit too. I could not see anything wrong with my original unit, and I did confirm that its power adapter was delivering voltage which I presume was right (in the neighborhood of 5VAC IIRC).
I did not see any evidence of corrosion, though I did not disassemble the fixture body. But I wonder whether the inevitable moist, salty air rising from my tank contributed to its premature demise. Or maybe I just had a bad unit. Or maybe these Marineland LED
fixtures are prone to early failure.
Wondering if anyone has any opinions / suggestions on this issue.
tank with sump & skimmer below, no bubbles in main tank