Tetra Whisper Ready-to-Use Disposable Filter Cartridges for Aquariums X-Small, 4 Count

This works in the small filter that came with a 2 gallon tank I purchased for a goldfish. I change them once a week when I change the water and they seem to work pretty good.

My 2.5 gallon triangular 20 year old plastic aquarium has been out of commission for a couple of years when the pump and light went out. My 9 year old asked if we could activate it so I had to buy a new pump. It was not the same kind as the original one and had some kind of plastic biodegradable joke of a filter. The replacements were VERY expensive too so I tried this kind as they are what the old pump used. Super happy, now the tank stays sparkly clean.

I like going to product comes in in good pictures let me know it's on its way and a good tracking number thank you for my order nothing was punctured or tour

exactly as described and came quickly

I couldn't get this at my local Walmart anymore so I was happy to find it on the website and have it shipped to me in only a couple of days.

works good but I ordered them too small

Cleaned up the tank really quick and fast

Great for my small aquarium

Easy to use and great price.

why to small couldnt use them