RFAs are pretty much indestructible once they are established. I’ve owned hundred over the decades and the only thing I’ve seen kill an RFA are freezing temperatures , a damaged foot, or a peppermint shrimp.
Any lighting that is good enough to grow coral will be fine for them, and many of them are fine with higher lighting than you’d think. They are super adaptable. Same with flow, although they do not like to be directly pounded and will move spots.
Target feed them with some meaty foods (mysis, whatever you have on hand) once or twice a week. You’ll get to see their awesome feeding reaction, and it’ll help them pack on some size and promote breeding.
Finally, if one RFA is good, a squad of them is better. They are not able to be sexed unless you witness spawning, but getting a group of several should give you a good chance of having both males and a female for spawning. And if you’re in the US, don’t over pay for RFAs. Single nems will always be a little more, but the best bang for your buck is to buy in packs of 6-10!
