How on Earth to y'all keep betta alive for 5+ years?! In almost 5 years of keeping betta I've only ever had one last 2.5 years, all the others die within 1.5-2 years. I've even read posts saying that if they die before 2 years it's not normal and that they should last for at least 4 years if you are keeping them properly. What am I doing wrong?!