Premium Self-Weighted Aquarium Sponge Filter (XY-180/280/380) | Air-Driven Bottom Bio-Filter for Fry & Shrimp | Air Pump Required

Premium Self-Weighted Bottom Sponge Filter

Provide the ultimate safe and healthy environment for your breeding tanks with the Self-Weighted Bottom Sponge Filters from Atradesen.com. Perfect for dwarf shrimp, fry, and small tropical fish, this classic air-driven bio-filter features a heavy base that sits securely on your aquarium floor without the need for unreliable suction cups that constantly fail.

🌟 Heavy-Duty Base & Bio-Filtration

• Self-Weighted Bottom Design: The heavy built-in base keeps the filter firmly planted on the tank bottom. It won't float away or get knocked over by active fish, making it perfect for bare-bottom breeding tanks!
• 100% Shrimp & Fry Safe: The gentle air-driven suction provides excellent mechanical filtration while guaranteeing that delicate baby fish and shrimp will never be sucked into a motorized impeller.
• Ribbed Bio-Sponge Media: Manufactured from premium, eco-friendly porous foam. The ribbed cylinder design massively increases the surface area for beneficial nitrifying bacteria to colonize.

🚨 Operation Guide & Warning (Crucial!)

This filter operates purely on air displacement physics. Please read the Atradesen.com operational rules before buying to avoid setup failures:

• ⚠️ AIR PUMP REQUIRED: This filter DOES NOT contain an electric water pump! You MUST connect it to an external aquarium Air Pump using standard 4mm airline tubing for it to work. (Air pump and tubing are SOLD SEPARATELY).
• Dual Action: As the air bubbles rise through the clear tube, they pull water through the sponge (filtering it) and break at the surface (oxygenating the tank).