Not sure where you are looking but the Duo is available on my list..
You should talk to Daniel though. A single Uno 2.0 may be enough. It depends on mounting height and the angle of the reflectors you use as well as what you are trying to keep in the tank for light demands.
https://www.reefi-lab.com/reefi-led-duo-info/
You should talk to Daniel though. A single Uno 2.0 may be enough. It depends on mounting height and the angle of the reflectors you use as well as what you are trying to keep in the tank for light demands.
https://www.reefi-lab.com/reefi-led-duo-info/