How do you keep your indoor greenhouse warm? Seedling mats? Mini heater? Currently inside my greenhouse is 68-70 degrees. I want it warmer. : r/houseplants
VIVOSUN Durable Waterproof Seedling Heat Mat 10" x 20.75" UL & MET-Certified Warm Hydroponic Heating Pad for Germination, Indoor Gardening, Greenhouse : Amazon.ca: Home