Grown from seed... Also these are super cropped and topped no nutrients under 600 watt hps 3 feet from the plants with 2 100 watt led 6-8 inches from the plants. I mix molasis with thier water and some orange and banana peel but thats about all. Humidity mostyly between 40-58. Im actually going a lil low on temps i keep them around 65-78 F° night go as low as 45 degrees and their light schedule is 19/5
Ive also heard the same thing mcSkunk, i wana say ive also heard that a 20° difference will straight kill off the plant ,im sure its okay to have your temps drop maybe once a week but not on the constant
Keep us posted
I would say to invest in some kind of heat supplement(safe heater) in company with ventilation if need be while the light's are off. I use an Ac with a heater. You could also save them with new growth by transplanting into some super soil. I would make sure that when you transplant your plants they are not infested with bugs or mold. Use microscope if need be and clean if infested of pests and mold. There are plenty of products out there that take the guess work out if you want soil that already has balanced ph and nutrients. I won't mention their names out of respect for this site but in my opinion it may be wise to work with one to get your plants a little healthier. Plus it will make it easier. You just add water no bottled nutes. I would suggest asking your local grow shop about products like this. Again, this is my opinion. I've grown in -40 climates indoors without a problem.