I Just Got A Small Zoo Med Uth. I Plugged It In And Had Thermometer On It Monitoring. It Went Up To 115deg. I Unplugged It As Fast As I Could To Prevent Burning. Whats A Good Product Under $20 That I Could Use To Act As A Temperature Regulator? I Want To Keep It At 90-92deg?

Do I Have To Cover The Uth Area With Something Before I Put Aspen Over It?