Bio Sponge Filter for Betta Fry Aquarium Fish Tank Up to 55 Gal, 3-Pack (L)

I have a 60 gallon tank with fancy goldfish in it, and these are wonderful. I put two inside my tank, HOB filter on back, with a dual air pump and two air stones to help dampen the noise, and they're perfect. They help circulate oxygen, which the fancies love, and they are another place for good bacteria to cultivate in the tank. Clean them every few months and you're golden. Highly recommend, especially with high bioload tanks or tanks you want to breed babies in, as they cannot get sucked into the sponge filters.

Ease of use: This filter was so easy to set up, all it needs is an air pump and tubing. I haven’t messed with it since! Fish health: This thing has survived countless illnesses in my tank, and still hold an amazing bacteria balance Ease of cleaning: I’ve had this for 3 years now. I almost never need to worry about the water quality! Totally recommend

Great to use and helps with your tank being cycled new tank put your old filters in to make it fish safe way faster.

These are cheap and effective, however they make great sponge pre-filters for hang on the back filters. They have a higher surface area than regular hang on the back pre-filters. Just make sure they reach the bottom of your tank so fry and and anything small does not get sucked up. You can even mix it up and have one hang on the back and one that is just a sponge filter.

High quality for the price. They work very well. Pumps come separately