I have both and will get the controller for the Vortech later.
In my opnion the Vortech is much neater as it is less intrusive in the tank.
The Vortech moves water in a much wider pattern, the Tunze much narrower at higher velocity.
Also no heat input into the water.
Downside is you cant angle them, but i find using the magnet holders on the Tunze, the thick wire and design, limits the angle that you can adjust it through.
I will certainly buy another
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