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Old 12/31/2007, 10:37 PM
barjam barjam is offline
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Join Date: Jan 2002
Posts: 890
T5s and MH produce the same heat watt for watt but T5 tends to deliver less heat to the tank. My MH setup actually runs significantly cooler than my old T5 setup (even though it is three times the wattage) but I assume my results are not typical.

I ran T5 for a year and a half and ended up not liking them.