10PCS Fish Tank Filter Brush Flexible Bendable Cleaning Brush Durable Stainless Steel Core Bristle Brush Aquarium Cleaning Tools Fish pond brush filter brush Koi pond bottom filter material Aquarium filter material

Key Features & Benefits: 1. Dual-Action Filtration PowerThis advanced bio brush performs physical and biological filtration simultaneously. Its dense bristles capture suspended debris, fish waste, and uneaten food across a large surface area. Meanwhile, the deep six-groove design provides massive area for nitrifying bacteria colonization, converting harmful ammonia and nitrites into safe nitrates. Far more durable than floss or sponges! 2. 304 Stainless Steel Core (Saltwater-Safe!)Industrial-grade rust-proof stainless steel withstands saltwater, extreme pH (4-10), and temperatures up to 300°C. Never warps, cracks, or snaps like plastic alternatives – built for a decade+ of reliable service. 3. Silent Overflow & Gentle FlowThe spiral brush design breaks turbulent water, reducing overflow noise by up to 70% in sumps, wet/dry filters, or reef tank compartments. Creates a stable, gentle current that protects bacterial films and sensitive livestock. 4. Hydrophobic & Self-Cleaning BristlesSpecially treated fibers repel water buildup and resist clogging. Simply shake to dislodge debris – no scrubbing or frequent replacements needed. Ideal for hard water setups! 5. Reinforced ABS Pull RingFeatures anti-aging additives and extreme temperature resistance (-20°C to 80°C). Secure-grip handle withstands acids, alkalis, and UV exposure without brittleness. 6. Plug-and-Play Versatility  Ready to use instantly in any aquatic environment: Aquariums: Silences noisy overflow boxes, optimizes sump filtration, enhances canister filter efficiency Ponds: Boosts biofiltration in filter chambers, waterfall boxes, or settlement tanks   Technical Specs: Material: 304 Stainless Steel Core + Hydrophobic PP Bristles Sizes: 30cm (12") / 40cm (16") / 50cm (20") Color Options: Forest Green / Stealth Black Certifications: RoHS,   Why Professionals Choose This Bio Brush:→ ENDURES harsh environments: Thrives in marine, cichlid, or high-bioload tanks→ LOW MAINTENANCE: Outlasts ceramic media or plastic bio-balls (just rinse monthly!)→ SPACE-EFFICIENT: Fits compact sumps while outperforming larger filter media→ ECO-FRIENDLY: Zero chemical leaching – safe for shrimp and sensitive fish   Pro Installation Tip:Place vertically in overflow chambers to dampen noise, or horizontally in sump filter trays before biomedia. For ponds, stack multiple brushes in filter pits for cascading biofiltration. Pre-rinse under tap water before use.