The Small-Sponge-Filter-XY2830 is an effective and efficient aquarium filter for small tanks and bowls. This filter has an adjustable flow rate and is designed to help keep your tank clean and healthy. It uses a sponge to trap debris and dirt, and the filter's intake tube can be adjusted to suit the size of the tank. This filter is easy to install and use, and it's suitable for both fresh and saltwater tanks. The Small-Sponge-Filter-XY2830 is also affordable and reliable, making it a great choice for any aquarium.