2 Hatch (rebranded by Ice Cap) 150w electronic ballasts for sale. $75 each. I was using them before upgrading to LED. I am the first owner. They have between 2.5 - 4.5 years of use.
Like these:
https://www.1000bulbs.com/product/64...1501F120U.html
http://www.atlantalightbulbs.com/eca...-277UHATCH.htm
http://www.amazon.com/Hatch-MC150-1-.../dp/B006XEWO4M
Here is the photo of the actual ballasts hooked up in a ballast box housing.
