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semperfimarine1
Wed, 28th Nov 2007, 10:54 PM
how often should one change the bulbs on a pc fixture?
MissT
Thu, 29th Nov 2007, 12:35 AM
generally, every 6-8 months.
devonian
Thu, 29th Nov 2007, 09:10 AM
I always did it every 9-12 months, ...
alton
Thu, 29th Nov 2007, 12:20 PM
If you have corals that need a lot of light 8 months, if not 12 should be fine. Your corals will let you know.