Dolphin Nautilus CC Tested vs. Pool Vacuums: Wall Climbing, 33 FT Pools (Surprising Efficiency) We put the Dolphin Nautilus CC to the test on a sprawling, algae-choked above-ground pool-33 feet long, and no corners left unturned. This robotic vacuum's wall-climbing scrubber brush made quick work of stubborn grime, navigating edges and steps with surprising agility. Its top-load filter access simplified maintenance, allowing us to clean the debris chamber without fumbling with hoses or complicated disassembly. While competitors often struggle with large pools, the Nautilus CC delivered consistent performance, even in tight spaces. What stood out most was its efficiency: it vacuumed and scrubbed simultaneously, leaving our pool sparkling in under an hour. For those with expansive or challenging pools, this model proves it's more than just a convenience-it's a reliable partner. We're impressed by how it balances power with ease, making pool care less of a chore and more of a manageable task.