My grow tent drops down to 65 (75-80 with the fan ...

Hello my friend There is Electric heating tube for growing chambers It is a very interesting heating system because it is designed for growing chambers It is enough to connect it to a temperature regulator choose a range of heat and regulate the regulator on the desired temperature range Here is a link to give you an idea about the product concerned   https://www.amazon.fr/chauffage-électrique-chambres-culture-ECOHEAT/dp/B00PZHDG3Q May the strength be with you 💪

I use the InkBird temperature controller and a cheap heater both from amazon. Very easy setup. Plug the controller into your outlet, position the temperature probe on the controller somewhere out of the way in your room, set the controller to your desired temp and you're all set!! 🤘

Troy_McClure, your doing great. My advice on the dancing seedlings, i would lower the air movement a little bit. Its normaly very good for stem development and growth to make them move like that, but they are still young and fragile. Also it may stabelise the temprature more, try to only mesuire at canopy level where the temp and humidity matters. Also if your humidifier doenst give enough humid, you can spray your girls with just plain water to up the humid. Hope this was an helpfull answer. Keep on growing my friend. Peace 👍

Plants do need cooler temps during lights out period, it's normal. You can use a Grow Tent Heater that will automatically start when temps drop below a certain amount.

@Troy_McClure Hi Troy your plants actually prefer about a 10 degree difference in temps during lights on and lights off as it mimics the natural environment the plants would be growing in The only time to worry is if the lights off period gets too cold which can have negative effects.

Plants also like a lil colder temps at night win they sleep just like in nature at night drops 5 to 10 degrees

I had the same problem and got the tip to put a Styrofoam plate on the floor and it helped. Maybe it will help you too.