Eshopps AEO19070 Square Foam Aquarium Filter, Large
</br></br>
<div style="text-align:left">
<b>[Product Information]</b><br>
<ul>
<li>Mechanical Filter Sponge for Zoo Med's 501 External Filter</li>
<li>Grabs particulates</li>
<li>Removes debris</li>
<li>Just rinse and drop in</li>
</ul>
</div>
</br></br></br></br></br></br></br></br></br></br>

</br></br></br></br></br></br></br></br></br></br>
<img src='http://ecx.images-amazon.com/images/I/41DoWkXBZSL.jpg'></br>
<img src='http://ecx.images-amazon.com/images/I/31hn7SMaZ1L.jpg'></br>