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Originally Posted by Bartman
There might be some cost advantage to T5's if they actually last 2 or 3 years.
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The first link you posted showed a 20% drop off after 2 years, that seams consistant with other floressent tubes, like VHO and PC.
so if we are changing out VHO actinics after 1 year I would suspect you will be changing out the T5 actinics after 1 year. The article you posted claims 18 months, so I am guessing that is what they are basing there cost figures on.
what I would like to see is some direct comparisons against VHO bulbs as the T5's will not be suitable for deeper tanks that have SPS at various levels (acording to the manuafactuer).
Steve
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