Came across what I think is a much better option than the equalivalant hydro store option. The Lux Win 100 is 35.65 + shipping from amazon vs around 80 for the hydro store model. It also comes with more features than say a cap TMP-1. The lux has both heating and cooling modes, rated for 15 amps, battery backup, up to 4 different temp settings throughout the day, adjustable temp differential (Allows you to maintain temps within 1-9 deg of your set point). I just wanted to share because I love mine. Works awesome and they're cheap!