Great value to get a multi pack since you need to change them so often.

I use these in my fish tank and they do an amazing job when it comes to keeping the water clear.

Despite the small size of this filter, it has been doing a great job of maintaining clean water, when changed every two weeks

They seem to do a good job, but you do have to rinse them well at least once a week

However they do a nice job of keeping my Betas tank clean and clear.

They seem to be doing a good job of keeping the tank pretty clean.

you get 4 filters in the package, and I paid less than $5 which is a great deal

n’t interfere with water flow

Work great for the recommended filter but the shipping wasn’t expensive for a product worth $4, especially one that needs to be bought often.

Product was exactly as advertised and I love the fact I can easily really reorder.

So far these filters have worked great :) great price for the amount of filters

Great price for a pack of 3 filters and they are easy to insert

Checking at the pet store, the price is always more expensive; sometimes 2-3 times more

Great price, easy to use & really keeps our 2 gallon tank clean.

Great filter but half the price at Walmart than amazon for exact same product

n’t interfere with water flow

but I never have to clean the tank as long as a consistently change the filter.

They keeps my tank cloudy

Works perfectly, came in quickly, and keeps my tank clean for a while!

Keeps the tank clean as long as you change it every 10 days.

These filters are pretty decent quality and work as advertised

The filters are good quality, but I just wish Tetra had made the filter-pump and filter cartridges a tiny bit bigger, so they would last longer than a couple of weeks.

n’t interfere with water flow

The filter is very easy to install and is of good quality.

Product was exactly as advertised and I love the fact I can easily really reorder.

These filters are pretty decent quality and work as advertised

n’t interfere with water flow

It works as advertised so if your pump uses this, then it works.

Takes a couple days to clear up the water but does the job

They are SO easy to use and work really well keeping the water clean

Mopani driftwood seems to really stain the water, even after bleaching

n’t interfere with water flow

The water stays just as clear and i'm able to prolong the use of each filter.

These fit in our filter formoir small 2.5 gallon tank.

I couldn’t find these in any pet store but these were a perfect fit for my starter kit fish tank

n’t interfere with water flow

I love these filters, they fit perfect in the fish tank I bought from Walmart for my Beta Fish at work

These filters do work really well but they are hard to find in stores

These filters are pretty decent quality and work as advertised

These filters work perfectly for my tank and last about 2 weeks before needing changed

Cheap replacement filters for your (or your childrens) tank

The filter and the filters are the perfect size for the tank

Order wrong size

Using two at a time until the correct size can be obtained

Wrong size but works ok

These filters are the incorrect size for the aquarium they're connected with