The AquaIllumination (AI) Axis 90 is a compact, smart-controllable DC centrifugal return pump engineered for freshwater and marine aquariums up to 90 gallons. It is highly favored by reef hobbyists for its space-saving vertical orientation, which easily drops into tight sump spaces or All-In-One (AIO) filter chambers. Technical Specifications Max Flow Rate: ~925 GPH / 3,500 LPH Max Head Height: ~10 feet / 3 meters Power Consumption: Variable, up to 40W max (24V DC motor) Physical Dimensions: 2.91" Diameter (74mm) x 7.75" Tall (197mm) Nozzle Connections: Includes 0.75" (20mm) and 1.0" (25mm) barbed output fittings Core Smart Features Advanced App Control: Features integrated Bluetooth and Wi-Fi. It natively connects to the myAI and Mobius apps on iOS and Android, allowing you to customize schedules down to 1% flow increments. Back-Siphon Prevention: Through output calibration, you can program the pump to continue running at a neutral pressure threshold instead of shutting off completely. This eliminates back-siphoning into the sump and stops disruptive air bubbles from shooting into your tank on restart. Dedicated Operational Modes: Schedule Mode: Creates changing flow intensities throughout the day. Feed Mode: Temporarily slows down or stops flow to prevent fish food from flowing straight into the overflow box. Ecosystem Integration: Can be fully integrated with Neptune Systems Apex equipment by connecting it via an MXM wireless module. Maintenance Tips To clean the pump, unplug the power and pull the unit out of your sump. Unsnap the low-profile bottom guard tabs, remove the internal impeller cover, and slide out the magnetic rotor assembly. Soak the parts in a safe aquarium citric acid solution to dissolve calcium buildup. When reassembling, ensure the ceramic bearing’s smooth side faces the rubber gasket and the notched side faces the impeller.
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