Killing Aptasia or Sterilizing Rock

[pirate]

When I bought my rock with lots of aptisia on it, I didn't care if it was live or dead. I put it all in the bathtub and filled it full of fresh water. I scrub it 1 a day and changed the water 2 a day. For the first few it did not take very long for the water to become gross and full of dead things. I would rinse it and fill the tub full again. Some of the life that was on it took a couple of days to kill off. If I was to do it again I would do the same, but after a couple of days in fresh water I would put it outside to freeze.
Or call the guy up in Edmonton that is looking for aptisia and trade him pound for pound or loan it to him.