• Here is a link to the full explanation: https://rollitup.org/t/welcome-back-did-you-try-turning-it-off-and-on-again.1104810/

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  1. mikebooy

    Btu comparison

    Hello...from what i can find a 1000 watt hps can throw off b/n 3000 to 5000 btu per hour....too big a range for the HVAC guy to accurately size a 20x20' x9' flower room with 36 lights.....any comments? Also i know the ballast throws off 3.4 btu/h per watt or in this case 3400 btu....is this...
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