【High quality】This floating ring feeder made of high quality plastic material, non-toxic, strong and durable. 【Reasonable design】Suction cup suspension, rotating device, floating design, when the water level rises or falls, rotatable rod repositionable with water level, floating rubber is embedded in the bottom, the fish feeding ring always keeps floating above the water. 【Keep the aquarium clean】The fish feeder rings keep the food in a certain area, it prevents the food from floating in unwanted places such as the filter, allowing more to be eaten. It is easier to clean up residual food, reduce waste and maintain water quality, increasing more feeding fun. 【Keep the aquarium clean】The rings of fish feeders keep the food in a given area, it doesn’t end up scattering or in the filter. It works wonders to reduce waste and maintain water quality. 【Wide Application】The size of the square feeding ring is 9.7 x 9.7 cm and the round one is 7, 5 x 7.5cm, suitable for various aquariums and