Right now I have a 55 gallon tank and I plan on upgrading soon and I want to figure out what a good filtration idea would be for large south american cichlid tank I am still not sure the size of my next upgrade. I have 1 ebjd, 2 gold severums, and 1 pleco. They are all still small the largest is the the jack at 2.5 inches. I used to have an oscar in there he got too big too fast so I gave him to the LFS. I have 2 fluval aqua clear HOB filters rated for 70 US gallons. I would really appreciate to hear what others have to think.