Our performance power filter are designed for nanos, betta aquariums, and small desktop aquariums up to 4 gallons. The dual stage filtration design provides biological and mechanical filtration for an optimal aquatic environment. Plug and play design for easy installation and simple maintenance. Promote a healthy aquatic experience with our ultra efficient filtration system. Our performance power filter are designed for nanos, betta aquariums, and small desktop aquariums up to 4 gallons. The dual stage filtration design provides biological and mechanical filtration for an optimal aquatic environment. Plug and play design for easy installation and simple maintenance.