Its easier growing in optimum temperatures
@Synch22 so get your temperatures up, close the window lol
I've been growing in cold room temperatures for years.
Biobizz or multipurpose compost and perlite. And all leds.... stop laughing now.
Heatmats are the answer. Getting the soil temperatures up is the main thing when attempting to grow in the cold, in my opinion.
It would be around 43°F in my attic now and I've 4 plants in 10 litre pots plus 2 small seedlings on a heatmat and they're looking good. I also water with tepid, rather than cold water.
Tent is at ~71°F lights on, drops to 53°F lights out.
Hut is at ~ 78°F lights on, 57°F lights out.
Purpling on plants could be strain related.
Glad to see another "Cold Temp Grower"
@onegreenthumb