Started of with 2 indo dats 5 years ago. didnt even know about MFK or fish forums.
Both were never that stable, but i had never seen a "stable " tiger back then, so it didnt bother me.
2 years later, started adding more tigers, gradually to this day now.
Up until year 3, only then did the tigers really start showing their colours, turn stable and remaining stable... Might have been a bigger tank & filtration, maybe adding more tigers, but end of the day, I'd say it was the time factor.
5 years on, and out of 12:
8 eat pellets as staple.
3 are stable 24/7
5 are stable most of the time.
2 are semi
2 are unstable