Marina T100 Top Replacement Filter Cartridge, 3-Pack

My tank’s filter requires 2 of the EF-S filters - which can get to be costly! I tried this filter and was so surprised that this brands works MUCH better than the “other” brand - which cost more. It keeps my tank cleaner, for much longer. As I open the used filter medium sometimes and take out the charcoal for my plants, I found that these have more charcoal inside.

Works for my filter, good value

The manufacturer was not making these filters. Then when they did they were very expensive.Now they are affordable as I did not want to purchase another aquarium just because of lack of filters

You get what you pay for sometimes.

These filter work great. Our tank filter technically needs cartridges with a top tab instead of a side tab, but those are harder for me to find. With these, I just snap off the side tab, rinse under cool water, and pop them in the filter. Perfect fit.

I've read in the reviews that this fits Top Fin filters perfectly. It's also cheaper than the EF-S cartridges.

These filters are excellent replacements for EF-S Top Fin filters. I'll never buy Top Fin ones again. These have carbon on one side and they last weeks longer than the Top Fin ones do.

Didn't really fit my filter.

I've tried other brands, but these are the best. Good quality filters.

These cartriges do fit in the Top Fin 3.5 gallon filters but they get clogged quickly.If you have a top fin filter, go buy some aquarium sponge, some bio-media, and maybe a pouch of activated carbon. should cost around $15-20. Cut the sponge to fit over the motor area where water come's into the filter compatment. Then toss the biomedia and carbon pouch into the filter compartment next to the sponge. rinse it every month or so with declorinated water.Reuseable filter media will save you money in the long run and it is better for your fish!

C'est parfait! Identique à ceux de l'animalerie mais moins cher. Je commanderai à nouveau c'est certain.

These filters fit my 3.8 TopFin aquarium just fine and are more economical than the TopFin brand. But actually this brand is cheaper at the pet store than Amazon's price, but, of course, the pet store doesn't deliver to your home like Amazon does.

Love the price shipping was fast and they do the job for my small fish tank for my beta named bubbles.