The IceCap 4K Gyre Flow Pump with Controller bundles the 4K Gyre pump with IceCap's standalone Multi-Function Controller — five flow modes, a feed timer, and an automatic night mode that drops to minimum flow when ambient light is low. No app or WiFi required. Rating: aquariums 25-150+ gallons Flow: 1,286-4,000 GPH Power: 13-45 watts Flow modes: Constant, Stream Wave, Random, Pulsing, Cycle Controller features: controller lock, 20-minute feed mode, light-sensing night mode Mount: waterproof magnet mounts, up to 5/8in glass or acrylic Warranty: 1-year limited The light-sensing night mode is a nice touch — the controller automatically drops flow to its lowest setting after lights-out rather than needing a manual schedule, which better matches how fish and corals actually rest overnight.Compatible replacement parts: propeller sets and magnet mounts for the 4K Gyre.
