This is the best one but here you go with other options...I googled Hovabator wafer
http://www.google.com/products?q=Ho...a=X&oi=product_result_group&resnum=4&ct=title
These are the instructions for the Hovabator
https://www.gqfmfg.com/pdf/Thermal Hova-Bator instructions.pdf
http://www.rochesterhatchery.com/catal/p21.htm
http://lllreptile.com/store/catalog...ile-incubators/-/hova-bator-thermostat-wafer/
http://www.google.com/products?q=Ho...a=X&oi=product_result_group&resnum=4&ct=title
These are the instructions for the Hovabator
https://www.gqfmfg.com/pdf/Thermal Hova-Bator instructions.pdf
http://www.rochesterhatchery.com/catal/p21.htm
http://lllreptile.com/store/catalog...ile-incubators/-/hova-bator-thermostat-wafer/