My good friend back home started a company many years ago before these blew up in the aquarium world.
its Version L2, up to 4 cubes a day of feed. I had his first version on my 300 gal reef, worked great and I used the algae growth to feed my tangs.
its in immaculate shape. Want 300$, will send pictures to interested parties. Any more info can be found on Turbos Aquatics site