【2 Size Options】: The wave maker head is used for aquarium pump, filter outlet, small size is suitable for 16mm/20mm calibre outlet pipe, large size is suitable for 20mm/25mm calibre outlet pipe. 【Mimic Natural Waves】: The carefully designed aquarium wave maker outlet simulates natural water conditions, bringing dynamic wave effects to your fish tank and enhancing fish activity and visual appeal. 【Luminous Effect】: Absorbs light during the day and emits a soft glow at night, enhancing the visibility of your aquarium and creating a mesmerizing nighttime ambiance. 【Versatile Installation Options】: Supports installation on mini submersible pumps, top filters, stream-style tanks, or mounted on the side or back of the aquarium, meeting diverse user needs for an ideal aquatic environment. 【After-sale Service】: If you have any problems during the purchase and use process, please contact us and we will help you solve them within 1 working day., Manufacturer: MiOYOOW