HamiledyiAquarium Filter Media 12 in 1 Bio Balls Ceramic Rings Fish Tank Pond Biofilter Filter Media 500 Grams with Mesh Bag

These are not typical aquarium sized they are huge and unless you have a big tank with a large gallon sized filter these won’t fit.

I have two penguin 350s and I split the media in half (one for each filter). If you’re wanting to put the media in all 4 slots buy two packs . Tank was super green(I had to treat For fin Rott) I added the media after the treatment and I am very pleased. My tank was very cloudy because I was down a filter due to a damaged impeller which is why I my fish developed fin rot so I had to find something to help keep bacteria in check, and the media is just what I needed, but you know how it is tho just give it some time to work (in photo both filters are working )😂 happy aquarium-ing

No dislikes, got exactly what was described. Can't complain about it. If you have any issues with it then buy some of the expensive name brand media and see if you get different results. Having different kinds and sizes allowed me to fit it into my little sun sun canister filter without issue.

It has a plastic bag inside it that I think is charcoal no instruction included

easy installation

Great value. Are used what they sent me on two different tanks, one very small and another large.Plenty of media for the buck

Good product but not a lot in there

I bought this for a small filter and the majority of the pieces were too large for my needs. Still it's a good mix of media. The bio balls area about an inch in diameter.