Aquarium Co-Op sponge filters come in four different sizes. You can visit the product page to see their exact dimensions, but generally we recommend: Nano = 5 gallons and up Small = 10 gallons and up Medium = 20 gallons and up Large = 40 gallons and up
Aquarium Co-Op sponge filters come in four different sizes. You can visit the product page to see their exact dimensions, but generally we recommend: Nano = 5 gallons and up Small = 10 gallons and up Medium = 20 gallons and up Large = 40 gallons and up