The filter is suitable for low water level aquarium , such as turtle tank, etc. it is extremely reliable. -it can help to keep your aquarium clean. -It can help to remove ammonia, nitrite, nitrate, phosphate. -it is quiet. -it is easy to clean, you just need to take out the filter panel and wash it. Specification: HN-011 Filter size: 18 * 8 * 6.2 cm AC: 220-240V 50Hz Power: 3 W Maximum flow: 300L / H Suitable for: 40L aquarium tank