As stated in my previous thread, I’m new to the bio cube family and I’m a week into cycling. I’ve heard mixed reviews on what filtration to put in the back area. My LFS says bio balls are not needed because I have live rock (20LBs). Also I’m not sure between chemi pure, carbon, purigen, ect. Just wondering what people run for their filtration. I’m going to be putting soft corals, LPS, and maybe just maybe one or 2 SPS.