Knots for Use: This flexible filter brush is great for cleaning pipes in aquariums.If you penetrate it from the strainer or drain pipe, you can clean it without removing the hose.If you do not clean curved hoses or glass pipes, it will reduce the flow rate, so cleaning is essential for regular use! [Various Uses] Our filter brush can be used for a variety of purposes, including cleaning water tank pipes, as well as household cleaning.After use, clean the aquarium hose pipe brush and place it in a dry place. Note: Please allow slight differences due to manual measurement. Depending on your monitor settings, the color of the actual product may differ slightly from the images shown.Thank you for your understanding.