I ran the power module for years, bought a par meter the bulbs last for years before noticeable drops in par levels, it is the spectrum that shifts and you can notice a different colour. My vote would be ati absolutely loved my light miss it as can't get no where near the growth and colour with led.
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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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