This is in my 120 gallon reef tank. I have a giant polycheat worm, and I want it out. I know that most are beneficial, but this one is approx 12 inches (i saw approx 7 inches without it tapering back). I know it likes mysis shrimp, and i tried the stocking (my girlfriend is still looking for her other stocking
). It got stuck in it, and 5 min later pulled itself out. However, it never left the burrow completly. To even further complicate the matter, it NEVER fully left the hiding hole. I know you can take the rock out and put it in club soda, that that it will freak and run out, but this rock is about 15 pounds, and the VERY base of the reef on which EVERYTHING else is resting on. I know there are comercial traps, but I do not know hoe efective they will be if the evil thing never leaves the hole completly. Does anybody have any ideas?? Give me what you got fellow hobbyists, I am going nuts.