I currently have a 28 gl tank with 11 miscellaneous tetra type fish and one placo! I have recently acquired a hexagon tank, 25"x 25"x 30" but keep in mind it's not a square it's 6 sided so it's not the 80 gal tank more like 70-75 gal. Interested in keeping the fresh water set up but intrested on the best equipment to get this tank operational, i.e. pump/s, Filters, etc, etc, etcetera. any and all input is appreciated.