Check the listing for details. Maxspect JUMP Gyre, Flow Pump. Condition: New. Listed at 219.44 USD. Maxspect JUMP Gyre, Flow Pump MJ-GF Series Superior Cross Flow Technology Explained Comparing to traditional powerheads and wavemakers, based on propeller nozzle technology, our latest gyre generator is based on crossflow technology. Propeller Nozzle Technology Dead spots with relatively poor water movement. Very strong flow in the center, making coral placement very difficult. Very weak flow near the other end of the aquarium. Cross Flow Technology Virtually no dead spots. Evenly distributed flow rate throughout the entire aquarium. Water bounces back from the other side to create a full ating "gyre flows". Near-Silent Operation With Sine Wave Technology Electricity current alternates in a much smoother pendulum while using Sine Wave Technology Integrated Controller with Large Display Fully Programmable 24 hours gyre flow cycle Specifications MJ-GF2K Dimensions - 8.78in x 2.83in x 1.5in Power Consumption 25w Flow Rate ~1849GPH Max Glass Thickness 0.5in MJ-GF4K Dimensions - 12.4in x 3.15in x 1.69in Power Consumption 45w Flow Rate ~3962GPH Max Glass Thickness 0.7in MJ-GF Series Superior Cross Flow Technology Explained Comparing to traditional powerheads and wavemakers, based on propeller nozzle technology, our latest gyre generator is based on crossflow technology. Propeller Nozzle Technology Dead spots with relatively poor water movement. Very strong flow in the center, making coral placement very difficult. Very weak flow near the other end of the aquarium. Cross Flow Technology Virtually no dead spots. Evenly distributed flow rate throughout the entire aquarium. Water bounces back from the other side to create a full ating "gyre flows". Near-Silent Operation With Sine Wave Technology Electricity current alternates in a much smoother pendulum while using Sine Wave Technology Integrated Controller with Large Display Fully Programmable 24 hours gyre flow cycle Specifications MJ-GF2K Dimensions - 8.78in x 2.83in x 1.5in Power Consumption 25w Flow Rate ~1849GPH Max Glass Thickness 0.5in MJ-GF4K Dimensions - 12.4in x 3.15in x 1.69in Power Consumption 45w Flow Rate ~3962GPH Max Glass Thickness 0.7in eBay integration by