I re-arranged my tank over the past two days and found three places where pink sponge is growning. One lump fell off and it has 6 zoas growing out of it. I didn't know what I was looking at and removed it from the tank. (put it back in as soon as I realized it was sponge) Will that spong die now? Should I try to attach it to a rock? Is pink sponge a sign of something good or bad. Found another patch 6" x6" growing on the underside of my toadstool leather. Bubba