Wow! That's impressive! I think I should mark in my calendar when I did the 1 head just to see where it is after 6 mo / 1 year! From my main colony which is about half the size of a fist (got it about a year and half ago as just 5 heads or so), I was able to cut 2 10 head pieces over the last 2 weeks and 1 fell off a few months ago when switching tanks.. Yesterday, I tried cutting just 1 head to see what would happen...