its cool to have, but if you cant give it away or trade it away, its better to toss it then have it grow over other corals. i have the same problem with GSP. it was the first coral in the tank. i thought it looked cool, but then it took over. i managed to get rid of about 95% of it, but theres still little pieces in the crevices of my LR that i cant get rid of. i just scrape up as much as i can when i can reach it and toss it out.