Indoor temp

It froze last night and my room recorded a low of 57 degrees. I don't have a heater or anything in the room. Everything is under high output florescence which are very cool. I'm installing my 1000 watt this week, but I'm planning to duct it out. As in, through one wall, through the light and out the other, never touching the room's air. Will this still increase night time temperatures, even though I have a high power inline duct fan? I looked on a weather site and the average area lows for the next nine months are 46.2, 39.4, 31.9, 28.2, 23.2, 24.0, 27.2, 29.4, 32.0. The room is fully insulated, and covered with drywall. The air conditioner shuts off at night which leaves pretty much a small open window to the outside air. I'm thinking about covering it up, but don't think that will do all of it.

Temps will go up for sure with that light

Even though you have a ( high power inline fan ) their will still be some type of heat imo

You say high power inline , but what is the cfm ,

The more hot air you can exhaust the cooler your temps will be ,

Plants can die in the frost , but your plants are indoors , so if you get some cold nights the growth might slow up some but will still grow , just not as good , imo anyway

Goten said it all. My wife and I also grow vegetables in our outside garden. Our fall crops are turnips, lettuce, green beans etc. Plants can take cooler temperatures. It's just your rate of growth activity that slows down.