This external filter is perfect for aquariums with a 30 gallon capacity. It is designed for use in freshwater tanks and is manufactured by Zoo Med, a trusted brand in the world of aquarium supplies. The filter is located externally, making it easy to maintain and clean. Whether you're a seasoned aquarium owner or a beginner, this filter is a great addition to your setup. It is suitable for a variety of fish and aquatic plants, ensuring that your tank stays clean and healthy. Purchase this high-quality external filter today and take the first step towards creating a beautiful and thriving aquarium.