I love this. I just got back into reefing after having a 90,75,and a 32 gallon tanks. I am now down to just a 13 gallon aquatop tank running with some foam block which came with it. I shortened the foam and put floss on it as my filtration. I run with a heater , light and ato. I also use an inkbird controller. At this point there is no testing just water changes every couple of weeks. Always believed in the K.I.S.S. method. I currently have a pistol shrimp and watchman golby.