SingleHole Sponge PreFilter Replacement Size: 3.4 inches Length x 2 inches Depth; Hole Diameter: 0.83 inches Designed as a replacement for prefilter sponges in aquarium filtration systems Compatible with most standard fish tank filter water inlets that fit the specified dimensions Key Benefits: Protects aquatic life: Safely covers the filter water inlet to prevent shrimp, fish fry, and small or delicate species from being drawn into the filtration system Improves water quality: Effectively traps debris, uneaten food, waste particles, plant matter, and other impurities before they enter the filter Maintains healthy flow: density yet soft sponge construction allows strong water circulation without clogging, thanks to its fluffy internal structure Material and Performance: Made from safe, durable foam with elasticity for longlasting use Gentle surface will not harm aquatic life when in contact Easy to install and remove for cleaning or replacement Practical Applications: 1. Use in tanks with baby fish or shrimp colonies to safeguard vulnerable inhabitants from filter intake accidents 2. Ideal for aquariums with heavy plant growth to capture loose leaves and plant debris before entering the filter 3. Suitable for community tanks where fine debris is common and frequent maintenance is needed to keep the water clear This singlehole sponge prefilter replacement provides a reliable, simple, and effective way to protect fish and maintain cleaner water, ensuring a safer and healthier environment in any compatible aquarium setup.