Hi guys, I've no doubt this has been asked plenty of times but thought I'd ask again. What brushes or cleaners are you using for 12mm glass lily pipes. I have this set https://www.amazon.co.uk/FZONE-Aquarium-Filter-Skimmer-Outflow/dp/B085LHVWB9?th=1 and the brushes that came with it are impossible to get round the bends. Can anyone recommend a good set if pipe brushes suitable for a 12mm lily pipe set?