Present invention relates a suspendable magnetic brush for cleaning an
aquarium with curved window surface, characterized in that an upper cover
with an air chamber is attached tightly to a bottom cover with a cleaning
material layer underneath, and an inner cover with a magnet located
therein is provided inside the air chamber, said inner cover being
attached to the bottom cover while isolated from the air chamber. Said
upper cover having through holes connecting the air chamber to the
exterior of the device. It is possible to adjust the air or liquid in the
air chamber through the holes connecting the upper cover and the air
chamber so that the weight of the interior magnetic brush can be adjusted
so as to balance all the forces exerted upon the interior magnetic brush.
As a result the interior elements of the brush can suspend in the water
and move smoothly on the aquarium window upon the manipulation of the
exterior brush. With the convex edge(s) of the bottom cover matching the
curved window surface of the aquarium the magnetic brush can clean both
curved window surface and the planar window surface as well.