Im lucky with my anenome. It has gone through hell and still lived. Sucked into a filter intake at least a dozen times. Lived with only 20 watts of actinic lighting for 2 months, a week and a half with no lighting, nitrates = 50. no bleaching or losing algae. Fully expanded everyday
now its in a 28g tank with 150 watts light and <10 nitrates and hosted with 2 "sebaes" ( or so the lfs said.)
IMO wait at least 6 months and make sure you keep your nitrates <10 and high output lighting. Keep filters intakes closed off or inaccessable.
My anenome is the rare case,prolly 1 out of a 1,000,000 that would survive what it did. Just wait and make sure you can provide a secure home and do your research.