Looking to buy someone who has extra fish tank water filters?

I have only been raising fish for half a year and currently have two large fish tanks at home. Due to poor water filtration equipment in the hanging waterfall, high noise and poor water quality, the goldfish tails have cracked. After some advice from a friend, I realized that I should replace the water filter with a stronger one. If anyone has spare water filters for sale, please contact me. I live in Flushing, New York. Reminder: Don’t rush to remit money or pay a deposit before seeing the real thing to avoid being cheated.