I agree with time being the only thing that really makes or breaks a datnoids stabilization, provided of course that your water lies within Datnoid specifications. I had a 9" Indo for 6 months and he never stablized. You can try dark background, dim lightning, rock/wood work for hiding, and floating plants but ultimatley its up to the fish. Also, I have had some luck with the proper tankmates. I noticed that my Indo displayed better patterns when larger, more active fish were in the tank with him. well, good luck!