I had the same question I recently in a new grower from Massachusetts who is very well educated in the process but never took it upon himself to try when I spent the money the right type of LED lights and bought some good seeds but with growing in my cellar today I noticed the concrete floor seemed a little cold with temperatures not climbing out of the twenties Outdoors and indoor temperatures hovering around 70 I decided to move a small space heater over by the plants within an hour I went downstairs the room was much warmer and everything was standing straight up. Glad to know I didn't do anything wrong..
I had the same question I recently in a new grower from Massachusetts who is very well educated in the process but never took it upon himself to try when I spent the money the right type of LED lights and bought some good seeds but with growing in my cellar today I noticed the concrete floor seemed a little cold with temperatures not climbing out of the twenties Outdoors and indoor temperatures hovering around 70 I decided to move a small space heater over by the plants within an hour I went downstairs the room was much warmer and everything was standing straight up. Glad to know I didn't do anything wrong..