While a good price and fit, my aquarium was full of small white particles immediately after turning on the filter. It looked like it was snowing inside my tank. I can only imagine what this has done to the digestion and immunity of my fish. Fortunately, I keep less expensive community fish. Glad I don’t have any $30-50 species or I would be really worried. Hopefully, they will know enough not to eat too much, but they have never appeared too intelligent. I don’t recall the Fluval brand ever having this problem. I will have to give the filters a thorough rinsing the next time I do a water change. The added time and step probably negate the cost savings for me.
Well, you get what you pay for. These are a great price, but I have found that they don’t hold up very well. I like to change out 6 filters and then deep clean the dirty ones so they are ready to rotate in at the next cleaning. I get about 2 cycles of this before the foam starts to break down dramatically. So, they work well for the short term, but are a disappointment overall.