Winter Tent Temperatures

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Winter runs in an unheated room are where autos slow to a crawl, since night temperatures under fifteen degrees stall root activity even if the day looks fine under the light. A small tube heater on a thermostat or simply running the lights during the coldest hours fixes most of it. Reversing the light schedule so the dark period falls in the afternoon is the trick described on https://turboautoflowerseeds.com and it cut my heating cost to almost nothing. Cold roots also make cal mag issues far more likely.