Oversizing algae reactors

[Gaufl]

Hey there!
I am in the process of setting up a 200l NPS only system. Still in the planning phase of the build. I was thinking of using an algae reactor (Tunze Reactor) to reduce the massive amount of nutrients that I need to put into the system.
The Tunze 3181 is rated for up to 600l, while the 3182 is rated for up to 1.600l

Which one would you use for such a system?
This would be my first time using an algae reactor, any tips?

Greetings,
Flo

 

[reefwiser]

Over sizing will not be of much use. Algae will grow up to the level of nutrients in the water. Even if you add extra food in this system.