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Old 09-12-2004, 09:24 PM   #1
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How long before bulb replacement?

Ok, so if I'm spending about 500 bucks for a coralife 4x96 watt for my 55gal, how long before I need to (or should) replace the bulbs? It's really hard to spend that kind of dough if I need to replace the bulbs after 12 months or so...


- Mike
125 gal. reef w sump/refugium & 8-bulb 640w T5's
45 gal fresh w/plants + CPF lighting
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Old 09-12-2004, 09:30 PM   #2
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Most people and websites will tell you to replace blue actinics after 6 to 8 months and regular daylight bulbs after 8 to 12 months. The longer you wait after this, the more algae problems you will have. The blues have a shorter lifespan before they start to weaken. You will not be able to tell by looking at them either.

Good luck! Kat
90 malawia cichlid
55 planted tropical community
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Old 09-12-2004, 09:31 PM   #3
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Not much choice really, they just don't last more than a year.. I've heard T5 tubes last longer but can't say for sure.
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bulb, long

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