Quote:
Originally Posted by fergus banana
i never thought about cost. but the pamphlet that came with the HPS grow light estmates about a $25 cost to run the light 12 hours per day,which doesnt sound too expensive and worth it if the plants grow like mad!!!
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You have to consider if you're going to add supplemental heat , I also have a light mover, and a humidifier all sucking juice. Combine that with a space not meant to be occupied during winter and an extremely cold winter at that and the costs add up.