best sponge filter for 3 gal qt tank

[motlot77]

someone had posted a cheapie sponge type filter to throw in my sump when not in use and now i can't find it.

what type of filter should i get?

 

[Gundo5000]

I wouldnt throw nothin but a filter sock.

 

[AZDesertRat]

You can get an AquaClear Mini hang on filter or even a simple sponge type air lift with an air pump. I use the AquaClear and keep a sponge in my sump for it.