Added 7 IT's in space of 8 weeks gradually, to my existing 2 big ones. I got an 8inch that is finally stabilising after 1 whole year of being black. Definately adding more tigs, removing all bogwood, lights on timer and sticking to that stretegy has really hepled. 
All the 9 it's have been in the tank together for no longer than 10 weeks (apart from the 2 older ones), so their still not 100% settled, but getting better each day and displaying alot more.
some pics below. more pics in another 3 or 4 weeks.
All the 9 it's have been in the tank together for no longer than 10 weeks (apart from the 2 older ones), so their still not 100% settled, but getting better each day and displaying alot more.