Enhance the water circulation in your aquarium with this high-performance Fish Tank Wavemaker Pump, designed to deliver efficient and reliable wavemaking without the need for an external power supply. Constructed with a durable PTC shell, this wavemaker pump features a 6-blade wide propeller impeller that harnesses water power to create natural, consistent wave motion, promoting a healthier aquatic environment for your fish and plants. Key Features: · Variable Diameter Support: Includes five different connecting sleeves compatible with most common pipe diameters (23mm, 18mm, 16mm, 13mm inner diameters), ensuring easy and secure installation with various outlet pipe sizes. · 360-Degree Automatic Rotation: Provides constant speed rotation without dead angles, guaranteeing comprehensive water movement throughout the tank for optimal circulation. · Power-Free Operation: Utilizes water power through the wide 6-blade propeller impeller, eliminating the need for electrical input and ensuring energy-efficient performance. · Robust and Versatile: Strong power output suitable for various fish tank sizes, effectively enhancing water flow and increasing oxygenation to support aquatic life. · Durable Construction: Made from high-quality PTC shell material that offers long-lasting performance and resistance to wear for extended service life. · Easy Assembly and Maintenance: The wavemaker head can be easily disassembled and cleaned without tools, preventing clogging and ensuring smooth operation. Specifications: · Material: PTC Shell · Wavemaker Pump Upper Part Size: Approx. 5.7 x 4.2 cm (2.2 x 1.7 in) · Wavemaker Pump Lower Part Size: Approx. 2.7 x 1.8 x 1.5 cm (1.1 x 0.7 x 0.6 in) · Accessories Include:  – 23mm (0.9 in) inner diameter connecting sleeve for 25mm (1.0 in) outlet pipe  – 18mm (0.7 in) inner diameter connecting sleeve for 20mm (0.8 in) outlet pipe  – 16mm (0.6 in) and 13mm (0.5 in) inner diameter connecting sleeves for water pump compatibility Package Includes: · 1 x Fish Tank Wavemaker Pump This fishing tank wavemaker pump is an essential accessory for any aquarium enthusiast looking to improve water flow and maintain optimal aquatic conditions. Its innovative design, wide compatibility, and easy maintenance make it a reliable and convenient solution for promoting a healthy and vibrant fish tank environment.