hydor vs vortech

[ramirifi]

thanks for inputs ,
the thing i am loving on vortech is that the wire is out of the water so it will not turn rigid in few years and break , it is what i have on all my power heads .
i want to know if 2 vortech are enough for 2m. tank or i need to put more powerheads for the flow ?
i will have the back flow at least on 4 output.

 

[Aqua Keepers]

should be fine