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Old 12-09-2008, 11:14 PM
spreerider spreerider is offline
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i have a 175W MH and 250W MH for my orchids and together they only cost me a few bucks a month, its easy to calculate the cost per month,
(watts / by 1000) X Hours/month XHydro Rate in KWH,
for me its
(425 \ 1000) X (10X30) X (.065) = 8.28 per month
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