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I see a lot of advantages to going all-T5. If I were to use MH lighting I'd probably have two 400W bulbs along with actinic supplementation, totaling around 1000W. With my 10-lamp Powermodule I'll use 540W. This doesn't even account for the diminished time my chiller will have to run using T5's, as less heat will be produced. In addition to the electrical savings, I'll have the flexibility to change bulb colors and spectra to meet the needs of the corals beneath each lamp of the pendant. T5 lamps are also generally changed annually, which is less often than MH bulbs, particularly when MH's are overdriven. So, for me, the decision was quite clear.
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The Dude abides
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