This may seem a silly question but - how do you clean your (aquarium) pipework without making an almighty mess? I'm just about to clean the green eheim pipes on my 2180 for the first time. This is my first-ever tank, so I have zero experience of this. I've got a metre-long pipe brush. Which bits do I disconnect; do I need a bucket and mop, etc. etc? Please be as obvious/basic as possible - what's common sense to you could well be a revelation to me!