I need alot of info on sumps and overflows.
I just bought a 240 gallon tank for freshwater fish and I know it's good to and an overflow and sump tank with such a large tank. I know what a sump is but I have no idea what I should put in it. Do I put a carbon filter or bioballs or what. I also don't exactly how an overflow works either. If anyone can just tell me what I need to buy and how to set everything up that would be great. Please help me out i'm very ignorant with larger tanks.