Watercooling + Drano: How not to do it.
OK, listen carefully, children.
You do not put Drano in your watercooling system to clean out stuff from the tubes. Hoestly, that’s not an idea that’s filled with win. I don’t know who comes up with this stuff, or how anybody takes such an idea seriously.
I’m most amused by the prospect of what it will do to the blocks, rather than the tubing, especially if the block(s) are aluminium, in which case drano will dissolve them.