Its actually called "Low" stress training. Rocky mountain has the right idea in regards to increasing colas/yield but its called "Low Stress Training" because you're making the plant adapt (training) to growing at a "Lower" height. The branches get spread apart allowing light to penetrate to...
If your temps are 78-82 without a heating mat then you dont need the mat. I personally use a heating mat attached to a temperature controller which cuts power to the heating mat when the temps inside the tray reach 80. I picked up a digital one made by Hydrofarm for about $30 on Ebay. It has a...