Complete wet/dry filter combos are exactly what your tank is looking for
enhanced biological filtration and simple setup. Each complete
biological filtration system includes an overflow box, bio balls, a drip
tray & cover, egg crate, filter pad, return valve, clear vinyl
tubing, a 1 in. bulkhead and 3 ft. of 1 in. flex hose. The simplest
choice for advanced aquarium biological filtration with wet/dry filters.