I run a 1/2HP chiller and with MH it ran much of the 12 hours my lights were on. Now with LED it's rarely comes on, but does once in a while. In BC the cost of power isn't huge, especially in short term when you look at the cost of covering your tank. With my lights, (AI Sol), you'd probably need 9 of them @ $400 each. Most single fixtures won't cover the width, so pendants would be needed, or 2 fixtures. The cost can be all over the place though, depending on what you go with for brand and design.
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Brad
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