How do yall deal with a cold growbox in the winter...

On really cold nights I'll add a heat lamp. Warms it right up. Just have to make sure it's not to close to the plants.

I just moved my tent into the warmest room in the apartment. I tried the master closet but couldn't fit. I would try looking for a space furthest from any windows or doors..also putting a blanket or thick towel under the door so no cold air creeps in when the lights are off. It raised the temp for sure and ny girls seem to enjoy this space much better and now I can keep the bottom vents open on my tent at night to allow good air circulation. Thats what I just did, many options. Hope it helps! Cheers fam!

My grow box is inside my living space and says within the range of temps never below 18c. You could try using blankets on the tent to help insulate or increase the heat but its not the best option. I will often turn the extractor fan on low or only to come on when one temp/RH criteria is met, so that the heat from the led light is circulated throughout the tent. I also place one of the tent fans point doing on the light pushing air past it and towards the plant. It can help boost the temp 5-10c depending on the light and extraction fan programming. Good Luck!

I use hps lights during the winter for their natural heat. Have the lights on at the colder period of the day. Don’t know if you know this already, hope this helps though.