Hi, did a search as I am trying to figure out how to clean the inside of the U-shape intake tube on an Aquaclear HOB. I have a flexible wire double end brush but it does not bend enough to clean the entire U portion. Does anyone have any tricks as to how to clean this? Can I use baking soda with white vinegar and rinse carefully? I have an assorted batch of cleaning brushes but nothing works.
Fish+Plants thanks you!!