Sponge Filter Modification More Oxygen/Less Noise..

Hi guys I just wanna show the little mod I choose to do on my sponges to improve them before adding them to the tanks. As always please Rate Comment and Subscribe.Thanks for watching.. DIY/Modification Playlist https://www.youtube.com/playlist?list=PLr7iAwN1MVoY0tA8xu-1lu7vh8vL_VuiH