IceCap Gyre 4K Flow Pump with Basic Controller

Cross-Flow Circulation for Larger Aquariums

The IceCap Gyre 4K Flow Pump Kit is an authentic, engineered water movement assembly distributed by CoralVue to bring advanced, commercial-grade cross-flow fluid mechanics to home freshwater displays and large marine reef aquariums from 25 to over 150 gallons. Standard traditional wavemakers push water using a central propellor, resulting in a localized blast of high-velocity flow directly in front of the pump nozzle that quickly diffuses and leaves the lower corners of the tank stagnant. The Gyre 4K operates on a completely different framework, using large-format transverse flow cages to push a broad, uniform wedge of water right across the surface of the tank. This sheet hits the opposite glass wall and splits, pushing down toward the substrate and pulling detritus along the bottom back toward the pump intake. This complete circular movement creates total water column turnover with zero blind spots.

This specific kit includes IceCap's standalone Basic Controller Unit, designed directly for hobbyists who prefer straightforward, bulletproof hardware over complicated smart-home apps, Bluetooth drops, and Wi-Fi networks. The physical control interface features an ergonomic selection wheel that allows you to instantly dial in your peak flow intensity and alternate between 5 pre-configured water patterns. By utilizing an asymmetric cage system and specialized rotor pairs, you can set the pump to run forward for a morning high-tide current, then cycle completely into reverse to simulate an afternoon low-tide drag. This continuous, sweeping water motion keeps organic waste suspended so filter socks can pull it out, resulting in a cleaner sand bed and healthier coral polyps.

Key Features:

• True Total-Tank Gyre Current: Sweeps the entire length of your aquarium glass without blasting sensitive corals with localized hot-spot flow velocities.

• App-Free Manual Adjustments: Simple physical button layout and rotation dial let you adjust pulsing frequencies and set 20-minute feeding pauses in seconds.

• Ultra-Slim Profile Cabinet Footprint: Sits exceptionally close to the tank glass despite its massive 12-inch frame, allowing you to easily camouflage the pump body behind rockwork or overflow columns.

Ideal For:

• Reef tanks from 25 to 150+ gallons needing strong, even circulation
• Hobbyists who want to eliminate dead spots without adding multiple wavemakers
• Anyone planning to eventually integrate their flow pumps into a HYDROS WaveEngine system

Pro Tips:

• Mount the Pump at Least 2 Inches Below the Water Line to Prevent Air Vortexing. Because the Gyre 4K pulls a massive volume of water horizontally across its large 12-inch frame, mounting it too close to the surface will immediately create a powerful miniature whirlpool vortex. This sucks room air straight down into the pump cages, causing loud, spitting operational noises and blowing micro-bubbles throughout your display tank. Give the pump a minimum of 2 inches of clearance below your operating water line to maintain a silent, solid water stream.
• Do Not Let the Magnetic Cable Mounts Pull Tight; Always Form a Drip Loop. When securing your Gyre power cables down behind your tank, never pull the wire tight between the pump rim and your wall outlet or controller hub. Always leave a relaxed, U-shaped "drip loop" in the wire below the level of the connection jack. If water splashes or travels down the wire during maintenance, the drip loop forces the liquid to pool and fall harmlessly onto the cabinet floor rather than traveling directly into your electronic pin terminals.
• Perform a Quick Vinegar Soak Every 60 Days to Prevent Impeller Scaling. The high-speed spinning motion inside cross-flow wavemakers creates localized friction heat that naturally accelerates the precipitation of calcium carbonate (calcification). Over a few months, a hard white mineral ring will form around the internal rotor stems, causing the pump to run louder, consume more power, or trigger controller errors. Every 60 days, pop the cages off and drop the wet components into a bowl of warm fresh water mixed with white vinegar or a dedicated aquarium equipment cleaner. A short 30-minute soak dissolves hard mineral scaling instantly, keeping your pump running dead silent and extending its service life.

IceCap Gyre Generation Sizing Profile: