Ive had the bio balls in ever since i started setting up and cycling the tank. My first major 20% water change is tomorrow (Saturday the 9th of January) as my other post. I got told by the fish shop to slowly take a handful at a time of bio balls out every 1-2 days. I'm not quite sure what i should do with the sump setup I have. Any help or suggestions of what i could do would be great.\n\nHere is a picture of my sump at the present time. The Styrofoam is for the splash back, it was rolling down the sides of my sump to the bottom o f the cabinet so that solved that little problem.\n \n[IMG]http://tobiassluggett.com/fish/sumprhs.JPG[/IMG]\n\nThanks for reading.