The AIO (All‑In‑One) series offers a compact, integrated solution that houses the filtration chambers, overflow, and return within the aquarium for a clean, minimalist setup. Ideal for both beginner and experienced aquarists, AIO tanks range from 10 to 65 gallons and come equipped with adjustable nozzle returns, filter socks, carbon pellets, ceramic rings, and in smaller models, included pumps.