Its best to just stay away from cartridge style filters all together. While you can probably get away with rinsing it a couple of times, in the end, the materials are just not made for tht type of treatment. The floss used to make this cartridges and bio-bags are ultimately much thinner and poorer quality than the thicker filter pads used in canisters. After a few washes you will notice considerable wear to the padding. This also breaks down the surface of the material in ways that make it less habitable for your bacteria. Not to mention that they also generally use carbon in the cartridges that in the end, are more harmful than beneficial.

This is only one of the MANY reasons that I always recommend the AquaClear line of HOB filters. They are, in my experience, the best value on the market, and provide a superior product.
I used cartridge style HOBs exclusively for years before using and studying these filters. And I would never waste my money on another cartridge HOB again.

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why buy, when you can DIY