I bought the aqua clear filter sponges & then cut them to fit my needs. I got them at Petsmart but you can get anything similar. I bought the box that has 3 sponges. I have the Top Fin 10g filters. I would think what you have would work. I kept the filter cartridge frame & stuffed the filter in the space between the frame & the filter housing on the tank side so the water still flows from behind. I don't know what kind of filter you have. You may have to play around with it to figure out what works best for you.
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