pair of crosshatch triggers

[aussiecoral]

i just recently bought a pair of crosshatch triggers, female is around 5" and male is around 7". I noticed their full grown is around 10". The only thing that scare me is i think tank is too small (75 gallons). I have read on many website that said they require minimum 75 gallons so i guess my tank is right size. I would like some of your advice if my tank is compatible for them since i don't want them to stress out in my tank, thanks in advance.