I bought this 5g nano aquarium filter on January 11, 2021. It is now June 14th and the filter flow is significantly lower than when it started and it is very noisy. So 5 months and it has already started to wear out. I do weekly water changes and filter cleanings, so I'm pretty sure the problem is with a product that just isn't built to last. It worked very well for the first few months. Edit (6/16/21): I contacted the seller regarding the above issues and they agreed to send me a new unit at no extra charge. Upgrading this product because it has worked very well in the past and the customer service has been great!
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