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Old 10-29-2009, 02:43 PM
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StirCrazy StirCrazy is offline
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Most bulbs I have found are rated at two different bulb life, under 15 watts seam to be 6000h or 250 days 24/7, the over 15 watters seam to be about 8000 hours so 333 days. I had a 23 watt bulb and I did a once a year bulb replacment, and I replaced it in the spring, so it was most effective during the higher temp weather when algae blooms would be more frequent.

Steve
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