This filter is excellent for small size fish
like dwarf cichlid, guppy, killifish, shrimp etc., or for hatcheries, maternity,
nano tanks, and fry tanks, as the filter produces minimal current and has
almost no way to suck the fish through the filter.  Also, the air infusion chamber produces
minute bubbles which increase the oxygen solubility.
Simply install an airline into the unit and
provide both aeration and physical
filtration combining with biochemical filtration for
your fish. They are especially useful for breeding small fishes.
Reduces noise from air pump and consumes lowest wattage
Multi-layers easy to clean and operate
Two Sizes
Available:
Size
Dimension
Tank Size
S (Small)
4″(L) x
3
.125
“(W) x 6″(H)
Up to 20 gallon
L (Large)
4″(L) x
3.25″(W) x 11″(H)
Up to 40 gallon
INCLUDES:
One Filter
ACCESSORIES
INCLUDES:
4ft airline tubing, 4 suction cups, 1 control valve, 1 tee, 1 non-return check valve
How Does It Work?
This filter uses bubbles
of air from an external air pump, or an integral water pump to draw water
through filter. As water is drawn out through the lift tube or pump, it is
replaced by water entering the filter.
The top layer of white
filter pad provides a mechanical filtration. 
The black bio-sponge in the 2nd layer and ceramic rings with gravel
provides biochemical filtration. They support the colonization of bacteria. The
bacteria help to break down harmful waste (ammonia and nitrite).
What Maintenance Does It Require?
The sponge will need to be rinsed every time it becomes dirty,
about once every 2 to 4 weeks. It’s helpful to reserve the beneficial bacteria
by washing the sponge gently with water from the fish tank instead of tap
water.