PreFilter Sponge for Aquarium Filter Intakes Specifications: Dimensions: 8 cm x 4.5 cm (3.2 in x 1.8 in) Inner hole diameter: 2 cm (0.8 in) Fits securely over filter intake pipes with a diameter between 0.8 in and 1 in (20–25.4 mm) due to its elastic structure Key Benefits: Protects small aquatic life: Prevents baby fish, shrimp, and snails from being drawn into hangonback filters, power heads, or canister filters Enhances filtration: Traps uneaten fish food, plant debris, and other large particles, helping maintain a cleaner tank and extending the time between full filter cleanings Durable and reusable: Made from resilient sponge material that withstands regular rinsing while maintaining strong water flow Applications: 1. Breeding tanks: Safeguards fry and shrimp by preventing accidental injury from filter suction 2. Aquascaped tanks: Keeps plant fragments from clogging filters, preserving flow and clarity 3. Community aquariums: Reduces buildup of waste particles, contributing to healthier water conditions Maintenance Instructions: Rinse the sponge regularly based on the bio load of your aquarium Avoid harsh cleaning agents to preserve beneficial bacteria colonies Refit securely over the intake after each cleaning Designed for easy installation and reliable performance, this prefilter sponge helps protect aquarium inhabitants while improving the efficiency of your filtration system.