thanks for the replies... I soaked the broken up pieces in bleach and water to remove all of the residual organic material. I plan on soaking in RO for a few days, changing it a couple times a day, then letting it dry completely. Then, in the reactor it goes.... I had a basketball sized birdnest that had the upper half die during a power outage and water level dropped. Hate to see that much coral just go to waste!!!