Small Fish Tank Filter, Hang on Filter for 1-5 Gal Nano Aquarium, Ultra Quiet Power Filter with Aeration & Oil Skimmer, Adjustable Flow for Betta Shrimp Tank

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About This 【For Tanks Under 5 Gallons】 This small fish tank filter is specifically designed for nano tanks, betta bowls, and shrimp tanks from 1 to 5 gallons. Unlike bulky aquarium filter units, our compact hang-on design saves precious internal space while providing powerful 5 gal fish tank filter performance. 【Whisper-Quiet Operation & Troubleshooting】 High-quality silent motor runs smoothly. Important: If noise occurs, check water level first (evaporation makes this fish tank filter struggle). After power loss, always fill the chamber with water before plugging in. Most fish tank filters get noisy when dry—ours recovers instantly once refilled. 【Filtration + Aeration】 Dense sponge traps debris while cultivating beneficial bacteria to break down ammonia. This aquarium filter naturally draws in air for oxygenation—no extra air stone needed for your small setup. 【Built-in Surface Skimmer】 Eliminates ugly oil film and protein scum from the water surface. Unlike basic fish tank filters, our model includes a dedicated skimmer to keep your nano tank looking pristine. 【Adjustable Flow & Easy Setup】 Turn the dial to control water current—gentle for bettas or strong for goldfish. This versatile small fish tank filter requires no tools: just hang on the tank rim, fill with water, and plug in. Show more