AQUANEAT 16 pcs Replacement Canister Filter Pads Compatible with SUNSUN HW-303B/703B CF-400 Aquarium Filter Media Generic Sponges Floss

I'm actually pretty impressed with these filters as they fit my Aquatop CF400UV canister perfectly. I'll definitely be buying them again, and I recommend them as well.

This set of fish tank water filters worked really well. Fit well in the canister. I will be reordering again. Overall good value for this set.

Easy to assemble and clean. Very durable/long lasting.

Fits, but is thinner than I would like

These were correct for my canister filter.Although they did not come in the different colors of what they showed

I bought these for my SunSun304B + SunSun 704, since they were listed as compatible. Honestly, they were super small and didn't fit but I just put 2 filters per tray to cover the gaps and it works perfectly. You get so many that it honestly doesn't matter. This whole set replaced my sponges and floss for BOTH filters and I still had some left over. Great value even if it doesn't really fit perfectly.

Excellent filter pads, keeps my Aquarium water clean and simple to rinse and reuse.. love them

I'm not positive what the deciding factor is, but the filters in this pump make this aquarium my prettiest tank. The water has the best polished look of all 5 of my tanks. And none of my tanks are lacking on filtration. This particular tank has room for poly fill but everything else is basically the same, at least very very similar. And they are pre cut and fit perfect. And you get a lot for the money. From my purchase experience, this filter and pump are by far the cheapest and prettiest of all 5 tanks I've got set up