I bought a 2200w Ryobi generator from Home Depot that has a digital inverter. I've used it several times already for my reef tank. Best under $600 I spent on my tank.
http://www.homedepot.com/p/Ryobi-2-...-Digital-Inverter-Generator-RYI2200/203617901
Probably will buy this as well.
http://www.northerntool.com/shop/tools/product_200402013_200402013
http://www.homedepot.com/p/Ryobi-2-...-Digital-Inverter-Generator-RYI2200/203617901
Probably will buy this as well.
http://www.northerntool.com/shop/tools/product_200402013_200402013