SUITABLE FOR ALL TANK SOURCES: The magnetic fish tank brush is suitable for all kinds of tank, such as acrylic, glass or plastic etc. that won't degauss STRONG MAGNETISM: The magnet is strong enough to stay attached even if you have non-standard type tanks, and can prevent wet hands trying to retrieve the submerged part SHIFT ALGEA WITH EASE: Put the flat part into the aquarium tank, put the other part outside the tank, and they can be adsorbed together. Move the outer piece and the inner will move the same way, so you can clean the inside and outside of the aquarium tank at the same time FLOATING DESIGN: Magnet Brush, Floating internal prevents the brush (the part in the tank) from sinking into the bottom of the aquarium and makes it convenient to remove it from the tank GET A FREE FILTER: The magnetic tank cleaner is comes with a free sponge filter Product Description Attention For more effective cleaning, please use it with a tank under 30-50cm and thickness less than 5mm FEATURE Suitable for all types of tanks, such as acrylic, glass or plastic, which do not outgas. Strong magnetic power, cleaning inside and outside of your tank at the same time without getting your hands wet. Floating design prevents the inner part from sinking and you can let it float in water all the time. Non-Scratch, with the pad not scratched. The brush will not scratch your tank. Get one more sponge filter for free (7x14). High quality material and exquisite design make it durable and smart to use. Non-jumping handle; Small and easy to carry. Easy to use Put the flat part in the aquarium tank, leave the other part outside the tank and let them adsorb together. Move the outer part and the inner will move the same, so you can clean the inside and outside of the aquarium tank at the same time Packge Contents 1 x magnetic brush 1 x filter sponge