Voltage adapter for WP25/40

[zrogst]

I'm in no way a DIY/hack/electronics type of guy. I'm planning on going to Frys tonight to pickup a voltage adapter for the WP25 so I can use it in a nano tank (currently turns tank into a blender)

Which one of these three would work best?

Is there something else I can pickup locally that would work better / cheaper?

i) Philmore 300mA AC Adapter w/ Adjustable Output
ii) Philmore 500mA AC Adapter w/ Adjustable Output
iii) Rhino AC Adapter w/ Adjustable 50W Output

 

[bugs713]

(currently turns tank into a blender)

What's red and green and goes 100mph? A frog in a blender....sorry, this reminded me of that stupid joke.:frog:

Check Radio Shack, unless you are closer to Fry's. The Rhino looks to be better suited for the job, but having a potentiometer controlling the voltage I would think would be optimal. I don't know enough about the WP's to comment further.
Good luck!