Check Out This Sponge!

[sundog101]

I think I need more sponges haha!

 

[saltyfilmfolks]

Man I wish I could get something like that in a tank!

 

[sundog101]

That would be really cool! I didn't know they had that strong of water flow going through them.

 

[Maritimer]

They say that a gallon-sized sponge can filter the equivalent of an Olympic sized swimming pool each day. (They didn't filter out that green dye, though, did they?)

~Bruce