Mine dropped to 58 and now back up to 68 with lights on again.
What is this that you get the temps and humidity reading on?
@Flitme ac infinity smart controller. You will definitly hear about 2 companys here. HLG and AC Infinity hahahA 
@Flitme this is AC Infinity’s Controller 69 Pro. I can control everything remotely through my phone as long as i have an internet signal. I travel alot and like to be able to control the temps and fan speed and overall monitor my room. The less exposure the better right?
@DukeHale whats funny is that i use AC Infinitys Controllers and exhaust and then use HLGs 600r and HLGs 320XL
@ChittyChittyBangin i rep HLG + Infinity also 
Hey mr. Regular Welcome to the happy zone. Ever hear about HLG or …thats funny right there
I got a CO2 meter and placed it in the room away from anyone. with the heater on there were over 1000ppm of CO2 in that room.
@DukeHale - High CO2 (carbon dioxide) is good for the plants…and a levels above 1400 can displace oxygen and cause headaches…but CO (carbon monoxide) is the killer. PPMs of that should be in single digits. Can get CO detectors everywhere pretty cheap…the are often built into smoke detectors.
I went to tuck the girls in, was inspecting the trichomes as my chop is tentatively Jan 1. I noticed a lot more cloudy trichomes today versus Wednesday, which may just Have been perfect timing, or maybe the cold? I read an article on another site that describes the plant producing a lot more terpenes and resin in the last few weeks if around 60F. I know many folks try to drop the temp of indoor grows to achieve this but, man, I’m now curious if the get even more when a little cooler still. Hmm. Sounds like an experiment to me!!
I give mine cold water for a couple days before harvest and then pack them in ice the last day of light (i give 36 hours of darkness)…same theory. Cold lets them know to put everything into the fruit!
i need to put insulation board around my basement grow room good idea
It was just me adding a tag to the link. The tag just associates the where the website traffic is coming from. Kinda like “brought to you by…” in commercials.
Just put this in another topic, so will copy and paste here 
this is just my own experiences with autos, I’ve done a fair few this year, 40C temps almost and now freezing temps
You’d be surprised how much autos can take, I live in the uk and my tent is in my outside brick shed, the tent has reached as low as 13C for the purple lemonade so did and didn’t phase her at all, autos are from colder climates naturally, so genetically she should be able to handle it just fine. A lot of people give autos way less credit than they deserve
This was my lemonade had about 2/3 weeks of very low temps
Another thing you could try if it’s possible is just lift the pots off the ground, the floor will be the coldest part of the grow area, heat rises n all that 
You can slightly see of the Temp but the highest it got in summer in the tent was 37C, lowest has been 11C and I noticed no difference in growth or anything on any plants
Only use electric oil heat. No CO