Prefilter sponges are great for covering filters intake tubers to prevent small items (e.g., leaves, fish food, baby fry) from getting sucked up and to grow more beneficial bacteria. To figure out which pre filter sponge will fit your filter the best, measure the diameter of the filter's intake tube. Then match it up with the appropriately sized pre-filter sponge:
Click on the product links above to see each sponge's overall length and width dimensions. If your intake tube does not match any of the above sizes, watch this video to see how to modify the pre-filter sponge so that it will fit.
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