I just had to manually move my crocea. it was getting blasted from PH in back of tank, and was in a crevis and could seem to get around it.
I wiggled it around very carefuly, every few minutes. Soon you could tell some threads had let go and had to hold on to it untill last few came loose. I took 15 min doing this so go slow, and do not pull just back and forth, alittle.
Next morning was reatached to new spot.