I got some reef rock from someone and have some questions about using it. I was told to put it in salt water with a powerhead, do a couple water changes the first day, then change the water 1 or 2 times a week for about a month. I was also told that this rock had come from a tank that had had palythoa and zoanthids so I should absolutely not boil these rocks. Well here's where my questions arise. My husband has been creating structures to use when these rocks complete the cleaning process. They've been processing for a couple of weeks now. Last night, as he was working with them, he experienced a couple of strange things. One, when he applied the super glue to one of them after breaking it, a smokelike cloud formed. Then when breaking another piece, it just crumbled and had what looked like black dirt inside the white rock. So I'm wondering how I know when these rocks are safe to use and if there is a better way to clean them because the saltwater I put them in is 35 ppt when I put them in but then when tested later it is off the charts and not even able to be measured in ppt.

