[Protect shrimp and fish] The filter cotton is filtered in multiple layers, which completely prevents shrimp and fish from being sucked in. [Prevent clogging] It can prevent large foreign matter from being sucked into the filter system and blocked. [Used] Suitable for aquariums, to protect shrimp and small fish, and to clean water quality. [High Quality] Our aquarium filter cotton is made of high quality sponge with good filter effect [Increase the oxygen content of the aquarium] The principle of biological filtration using multi-layer filtration to cultivate high-density nitrifying bacteria to achieve the effect of increasing the oxygen content of clean water< /p>
