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#1
07-31-2007, 01:49 AM
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-reply
-I've heard that for max. efficiency u shud change them every 10 months
but then u absolutely have 2 take into consideration lighting schedule, for me it's only 5-7 hours a day, but if u have sps corals then ur probably @ about 8+ hours/day so that cud reduce the bulbs span 2 only 6-8 months-mind you bigger bulbs (in wattage) tend to last longer, so good luck with that-
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33g fowlr / 20g sump / 400 watt pendant / Euro-Reef RC80~~~~lavendar tang, lemon butterfly, snowflake eel, hawaiian spotted puffer, tomato clown, chomis.. My reef~http://i297.photobucket.com/albums/m...-/P4300459.jpg 
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#2
07-31-2007, 01:55 AM
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I ran me 14k pheonix bulbs (250 watt DE) for 14 months and they worked great, in fact I might stick them back in again, they held up much better then my reeflux 12ks. I use them for 6 hrs a day.
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250 BB Starphire SPS, clams, & zoos 3 x 250 DE, IC 660 W/T5s OM 4-way, Hammerhead Pump Calcium, Kalk, RO filters, magnesium, Excellent prices
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#3
07-31-2007, 02:24 AM
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reply
-right now i got 2-70 watt-20k's and i'm happy with em' and all but hows the color with ur 14k's? i heard they give a nice purple tint-
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33g fowlr / 20g sump / 400 watt pendant / Euro-Reef RC80~~~~lavendar tang, lemon butterfly, snowflake eel, hawaiian spotted puffer, tomato clown, chomis.. My reef~http://i297.photobucket.com/albums/m...-/P4300459.jpg
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#4
07-31-2007, 02:49 AM
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my 14 K phoenix bulbs still hae great color. I head over to Afghanistan in Jan 08 so I will probably switch them in Nov when I get back from Wain wright after our confirmation exercise. to my megachrome 20K and when I get back Im going to buy another 2 sets of 14 Phoenix
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180 starfire front, LPS, millipora Doesn't matter how much you have been reading until you take the plunge. You don't know as much as you think.
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#5
07-31-2007, 03:20 AM
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there good untill you decide to change them. don't let store propaganda of 10 month changes push you into a sale. these same stores said change them ever 6 months 4 years ago, when people started noticing after 1 year they only lost 10% of the out put the stors looked silly so they all bumped it up to 8 to 12 month recomendation. I ran my AB's 18 months and there was only a 9% decrease in PAR output, but I concider AB's the cream of the cream in the bulb world.
Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*Some strive to be perfect.... I just strive.
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#6
07-31-2007, 03:27 AM
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from a study i read somewhere, par drops fairly quickly over the first few months and then levels out a bit and drops much more slowly.
The guy doing the study had accidentely left one of the old bulbs in and had thrown the new one out. While the par was much lower initially then the new ones, by the time the year was up all 3 bulbs were fairly close even though the old bulb was 2 years old. 
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