Found a larger version 105w
Amazon.com: Milliard Durable Waterproof Seedling Heat Pad 48"x20": Patio, Lawn & Garden
The 53w raised the air 3~ degrees I think a 105w should do 5 to 7 degrees (60-63 at night 70-75 day).
/ordered the 105w if it doesn't work I'm sure I'll use it for something else.