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Unread 10/20/2007, 10:21 PM   #35
TropTrea
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Join Date: Sep 2003
Location: SE Suburbia Wisconsin
Posts: 2,910
Lets say your using a pair of Metal hides using a total of 3 W=KWH per day. If these lights reduce your usage to 2 KWh per day and your electric charge is 0.11 per KWH hour then you are saving 11 cents per day in electrricity. Now at a cost a 2,490 for a 4" system it will take you 62 years of energy savings to make this upgrade economical.

But if going to have to by a light fixture anyway then you might be paying $500 to $1000 for it so you would only be paying an added $1,500 for this fixture. so you would have pay it off much quicker.

Now there may be added saving an bulb replacement costs though. With the MY T-5 fisture you would be spending about $100 a year on bulbs. But for the LED's we do not know how long they will lst and what replacemments will cost.

Dennis




QUOTE]Originally posted by kinerson
Are you sure it's 88w? I think they said it saves about 1/3 energy costs compared to a XM 20000k 250w so... [/QUOTE]


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Dennis B.

Current Tank Info: Main tank 120 Gallon, 432 Watts T-5's plus 30 Watts of LED's, Frag 40 Gallon tank 234 Watts T-5's, 3 Frag tanks all 40 Gallon with LED lighting between 60 and 84 Watts. All LEDs are DIY Oh and then there is fresh water tanks 270 gallons
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