Fish & Aquatic Pets
Tetra Whisper Internal Filter 10 To 30 Gallons, For aquariums, In-Tank Filtration With Air Pump
The Tetra Whisper 20i is a budget-friendly in-tank aquarium filter that is simple, quiet when positioned well, and easy to service. It is not my pick for tiny fish or delicate long-finned bettas without extra intake protection.