i agree with everyone about the sailfin it will slowly stress itself to death i learned the hard way when i was starting out my tank was 40 and i bought one

but we learn from our mistakes and pass the knowledge along hoping people will use it also i highly recommend removing the 3 stripe damsel there very pretty but have high aggression and are territorial especially when introduced to the tank first which many ppl do cause its a cheap fish to cycle with but so are chromis this being said sorry for putting down your stock tank looks wonderful in any case