Mine was only a 9V and exactly the same but branded Fish r Fun. It did work a treat and great water quality but I got sick of cleaning the tiny little filter pad that gets covered with scum.
The unit burnt itself out after 3 months continuous use.
This is why I suggest using it sparingly. 1 hour a day once the water is clear or something similar should suffice to have the whole of the tanks water go through it.
I now have a V2ecton 200 and this is on 24/7