Parameters have nothing to do with it. Luck is all. In time, there will be the same results. What happens is the Goni has sharp edges where it protrudes from the skeleton and the steady grinding and moving of the clown grinds the polyps against these edges and destroys these polyps one at a time. Kinda like popping the bubble part of the polyps of zoas kills that polyp. I'm not trying to be the bearer of bad news, just a lot of experience and knowledge and reading. I'm not sure where it was but there is a 32+ page post on RC about gonis and elegances that has given my wife and I oodles of help and that's why she has been so successful.

S