Luffa fell apart within a few days

I purchased this 2 pack so my mom could have one for her betta bowl and I could have one for my 20 gallon gold fish aquarium. Mine literally fell apart within a week and clogged the filter. Needless to say, I threw it out. My mom's is still together but is turning quite dark and I'm not sure if it's really good for the fish. We've been debating on whether we should take it out of the bowl.

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