I have an old fridge that still works well. I tested my Viparspectra 300w LED inside to see if the fridge can keep things cool. Guess what??? IT WORKS! The fridge hovers in the high 70's low 80's. This is a closed system experiment, just for kicks. I will increase CO2 PPMS to 1250 via Sentinel controller. 2 plants cloned from the last journal I did, unk strain but sativa dominant. Both in 1 10gal smart pot with organic soil. Wish me luck!