1. Protects small fish and shrimp from getting into the filter intake, reducing stress and injury to tank inhabitants. 2. Made of sponge material, an aquarium filter accessory that provides a soft and effective inlet shield. 3. 1 set includes 5 replacement pieces that can be swapped regularly to maintain protection and performance. 4. Easy to install around filter inlets; requires no tools for setup. 5. Helps keep the filter running smoothly by blocking debris before it reaches the intake, contributing to cleaner water and steadier flow. 6. Designed for aquarium filter inlets; check fit for your specific model and inlet size before use. 7. Replacement schedule: use the 5 pieces as part of routine maintenance to ensure continued protection and performance. Usage scenarios tank setup with small fish or shrimp: place the sponge pieces to prevent accidental inlet suction while the tank stabilizes. Routine maintenance: worn or dirty guards with fresh pieces from the set to maintain inlet protection and filter efficiency. Tanks with fine substrate or debris: use the sponge guards to capture particles before they can reach the filter, helping to reduce clogging and keep water clearer. Note: This set is intended to protect aquarium filter inlets and to be replaced regularly as part of standard aquarium maintenance.