QANVEE YX-300 / YX-600 Ultra-Thin Aquarium Sponge Filter | Air-Driven Biological Filter for Small Fish, Shrimp & Fry Tanks.
• Mechanical filtration: The sponge traps particulates like waste and uneaten food.
• Biological filtration: Beneficial bacteria colonize the sponge surface to help break down ammonia and nitrites.
Slim & Space-Saving Design
• Ultra-thin body saves tank space and maintains a clean visual look in small living-room tanks.
Easy to Use
• Needs to be connected to an air pump (sold separately) via standard airline tubing — bubbles rising through the tube pull water through the sponge to drive filtration. 
Quiet Operation
• Runs quietly with an air pump (no internal motor) and enhances oxygenation and water circulation.
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What’s Typically Included
• 1 × ultra-thin sponge filter (YX-300 or YX-600).
(Air pump and airline tubing are usually not included and must be purchased separately.)
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Good Uses
✔ Small freshwater tanks — community tanks, nano setups
✔ Shrimp and fry tanks — gentle flow protects delicate inhabitants
✔ Betta tanks & small species — safe, low current
✔ Biological support during cycling
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Notes and Tips
• Air pump requirement: You must use an air pump to get these sponge filters to work — make sure the pump is sized correctly for your tank. 
• Maintenance: Rise the sponge in old tank water during water changes to preserve beneficial bacteria.
• Safety: Sponge filters are gentle and safe for fry and shrimp since nothing is sucked into a motor intake.









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