Which sponge filter size should I use?
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
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Aquarium Co-Op Coarse Sponge Filter
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