Need some advice for my sump set up I know there is room for improvment so any help would be great. The sump came with my tank it is a 60 gallon sump that i run on my 230 gallon tank . This is not my only filter for this tank I have an FX5 on the tank as well. mostly I am wanting to know about media placement. I have included a picture of how the sump is set up . I am wondering if I should add plants or sand to the center ? Please take a look and let me know what you think.
PS the two center slide in partitions have no partitions in them.