TetraWhisper Bio-Bag Filter Cartridges For Aquariums, Large, 12-Count - Unassembled

I like filling my own. Polishes and cleans

I’m not sure if I used it right but it only lasted for a week. I also clean my tank before adding the new filter in. Trying a second filter now.

Easy to use. I only gave it 4 stars this time as for whatever reason they didn't supply the ever-clean tablets on my last purchase.

Works well

I usually get about 6 of these for $16 at the pet store. Nice to see more for my money. They are working great in my tank. They seem to collect algae fast on the filter. They look just like the ones in the store. No issues with these so far and I have used for about a month and a half now

Works great in my Whisper IQ - crystal clear water and I have an overstocked 29 gallon tank - 4 fish - different varieties of goldfish which are a dirty fish. Easy to change out but I do find the tablet is dissolved in about 20 days. But, the glass is practically spotless. I go over it with a paper towel when I do water changes and there's almost nothing. Very happy and will continue to purchase.

My water stay clean and make my fish healthy I’m happy and love it I will recommended to friends thanks

I like these (with the tablet) better than just using the activated charcoal. The tablet keeps the water much more clear

What a money saver… I have been using these for years and also it save on the package waste as there come in one box!

The ad was very clear stating the box was damage which is why I got the item at a discounted price. That was fine with me. What it didn't stare was that some.of rhe product was missing it was mission g 1 strips = 8 packs of the activated charcoal - the most important part!!An excellent product disappointed with quality when not stated in ad

good quality product..not a knock off cartridge,,price isnt out of the way..fast shipping

As expected.

Easy to use not a problem