Aquarium Hang on Back Filter Whisper Fish Tank HOB Filter with Adjustable Flow, Multi-Stage Filtration with Surface Skimmer & Sponge Guard for Small Fish Tanks 4-21 Gallon (3W, 80GPH)

• Space-Saving Hang On Back Filter for Small Tanks – Designed to mount securely on the back of your aquarium, this hang on back aquarium filter keeps valuable swimming space open inside the tank while maintaining a clean and organized setup. Size S fits 4-21 gallon tanks, while Size L fits 10-30 gallon tanks. Ideal for betta tanks, shrimp tanks, nano aquariums, and small freshwater fish tanks.
• Powerful Multi-Stage Filtration with Safe Intake Guard – This aquarium filter provides efficient mechanical and biological filtration to remove debris, odors, waste, and cloudy water. Built-in surface skimming helps clear oil film for better oxygen exchange. Intake sponge guard helps protect small fish, fry, and shrimp from being sucked in.
• Adjustable Water Flow for Different Fish Needs – Built with an easy flow control system, this aquarium HOB filter allows you to customize water output from gentle to strong circulation. Perfect for delicate fish, shrimp, fry, or active community fish that require varying current levels
• Easy Maintenance & Quick Cartridge – Designed for hassle-free cleaning, this fish tank filter features an accessible filter chamber for fast media changes and simple rinsing. filter pads are easy to install, helping maintain strong aquarium filter performance with minimal effort. For optimal performance, it is suggested to replace filter pads every 2–4 weeks.
• Ultra Quiet Operation for Daily Comfort – This fish tank hang on filter runs at less than 30 dB for whisper-quiet performance, making it suitable for bedrooms, offices, and living rooms. Before first use, add water into the filter chamber before powering on. If noise occurs, please check whether the aquarium water level is too low.

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