On Sun, 14 Apr 2019 22:35:20 +0100 (GMT+01:00), "Graham."
wrote:

Putting solids into the system seems contra-intuative to me, but
WTF do I know?

*I* dunno, but they say:

"Can you cause a block in my system?
"Blocking a system is impossible as all the abrasive will dissolve within 30
min, regardless. Once it has turned from a solid into a liquid, it will not turn
back into a solid, you could leave it in a system indefinitely and the system
would work just fine."


Thomas Prufer