Yup. Been there, done that. I'm doing it right now. It's pretty messy. When you pull it off to change the mesh/sponge some of the accumulated stuff falls back into solution in the tank unless you put a glass or plastic tumbler up over it from below to catch the droppings while you're disconnecting it and removing it for cleaning. So you have both hands down mucking around in the tank and dissolving body oils into the water etc. That's why I'm on the hunt for something better.