3 gallon filter for 10 gallon?

[Elliriyanna]

I was planning a 5 gallon so I bought all the supplies ... I was wondering if a single Marina elite filter rated for up to 3 gallons would be OK for a 10 gallon housing a single firebelly newt. I have it buffered effectively adding biological filtration and the flow is turned all the way down and produces practically 0 current

 

[Jennewt]

Do you have a photo of this kind of filter? Not sure what it is. But the answer is probably yes.

 

[Elliriyanna]

This is the filter the other sponge is inside the one you see is the buffer. The filter is less than 4 inches long