Feature(may vary by option.)

●【Precision Double Filtration】hygger sponge filter consists of a circular bio cotton and a chamber base with bio-ceramic ball that provide both mechanical and biological filtration for your aquarium, which is suitable for low flow breeding like betta, guppy, shrimp, snail, fish fry. Or as a pre-filter for other filtration systems and also be used as an auxiliary filter for large tanks.
●【Working Principle】This air-driven sponge filter is powered by an air pump that uses the water-lifting effect generated by rising bubbles and drives water flow through filter sponge, which can effectively adsorb excreta and residual bait to achieve the purpose of filtering and purifying water quality.
●【Filtration/ Culture/ Oxygenation】①Biochemical cotton has a high-density pores structure, which can more easily catch impurities and particles in water. ② The filter chamber is equipped with bio ceramic balls that help break down waste and cultivate beneficial stuff. ③Built-in a small bubble stone at the bottom can effectively increase the dissolved oxygen content in the water and generate a lot of bubbles.
●【Use & Maintain】①Our fish foam filter includes two sponges that take the spare sponge off and stay the other on filter before use. ②Filter container is easy to detachable and can be freely replaced with any other filter media as needed. ③Hook the filter up to air pump, and squeeze the sponge until it is full of water making it sink to the bottom of the tank. ④The sponge should be washed approximately every 2-4 weeks （use tank water rinse） to ensure the filter works properly.
●【Three Size For Choice】Small: 2.9"W x 4.1"H, it works pretty well filtration for 1 to 20-gallon small aquariums with under 14” depth. Medium: 2.9"W x 6"H, suggested for 20 to 55-gallon medium-sized aquariums with under 19.7” depth. Large: 3.9"W x 6.4"H, suggested for 55 to 125-gallon aquariums with under 26.4” depth.

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Description

Why Choose This Bio Sponge Filter?

First, it constantly supplies oxygen and provides good surface agitation for the fish tank.

Second, it provides a dual filtration system, bio & sponge to keep the water clean.

While safe and gentle enough to avoid sucking up a fish.

Fine-hole bio sponge

It came with two sponges (one to use now and a replacement).
Recommend cleaning your sponge every 2~4 weeks or whenever you see a decrease in bubbles. (Take the tank water for cleaning)

Filter Container

Come with a pack of bioceramic balls.
It can be disassembled and you can freely replace other filter media as needed.

Easy to Install

How to Use?

Take the spare sponge off the filter after out of the box.
Keep a sponge to restore its fluffiness and install fixing buckles.
Wash the filter to remove the dust before put in aquariums.
Connect the air pump and air tube (4mm) to the filter.
Squeeze the sponge until it is full of water making it sink into the bottom of the tank.

Tip:

The air pump and air hose are not included.
Due to the two sponges being squished up together, Please take it apart and loosen the sponge to restore its normal shape.