Hydor Koralia Evolution 850 GPH Circulation & Wave Pump – 115V, Black

Overview

The Hydor Koralia Evolution 850 GPH Circulation & Wave Pump is designed for compact reef and freshwater aquariums. It delivers a steady, powerful flow that you can steer to suit your setup, helping to create natural water movement without crowding your tank with equipment. Its compact silhouette fits behind rocks or along the back panel, and the integrated cable protector helps keep cords neat and safe. This model emphasizes low energy use while maintaining strong circulation, making it a practical upgrade for many hobbyists.

Core design and performance

The pump features a vibration absorbing magnet and suction cup assembly for secure mounting on glass or acrylic up to 1/2 inch thick. The shaftless impeller delivers an 850 gph flow, suitable for tanks roughly 50-100 gallons, whether freshwater or marine. Power consumption is 5 Watts, offering a notable reduction in energy use while delivering more flow than some earlier Koralia models. A sphere joint enables easy adjustment of flow direction to target specific areas of the tank.

• New vibration absorbing magnet and suction cup support for stable mounting in tanks up to 1/2 inch thick
• Shaftless impeller delivers 850 gph flow ideal for 50-100 gallon tanks
• Power absorbed 5 Watts; 50 percent less energy use and up to 20 percent more flow than earlier models
• Sphere joint allows adjustable flow direction to target hotspots
• Compact design with a cable protector for safer, neater installation around rocks and décor

Installation and compatibility

Designed to be versatile in a range of setups, this pump can be paired with Hydor's Wavemaker for programmable flow patterns. If you pair with a Wavemaker, use Hydor 12V controllable powerheads for compatibility.

• Ideal to use in tanks with urchins, triggers, puffers and parrot fish
• Compact footprint helps hide the pump behind rockwork or along the back glass

Maintenance is straightforward; occasional cleaning and checking the magnet and suction cup will help maintain peak performance. The included cable protector keeps cords tidy and reduces wear near tank edges.