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Old 06/17/2009, 12:39 PM   #60
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Join Date: Feb 2005
Location: CA
Posts: 348
Thanks homeboyreefer and gem_nut85.
Find an interesting article referred by reefmaster3024 from CVR:

My new lamps have arrived. The par drops almost over 30% after 10 months. The growth rate slows down, and I start to have difficulty to keep the brilliant color. Is it about time to replace with new lamps? Or hanging there for another two months to find out exactly how much the par drops.

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