Your tank looks very new, anemones generally need well-established, mature tanks. How old is your tank and what kind of lighting do you have. It’s hard to deduce these things from photos, and so if I’m way off base, I apologize and you can disregard my advice, but just being honest, your tank doesn’t look ready to keep an anemone. The anemone looks okay for now, but over the next few months your tank is going to be fairly unstable as it matures. I would hold off on feeding it, maybe a little bit of mysis every week or two, it needs adequate lighting (150-250par) and stable parameters (you want some nutrients, like 10ppm nitrates, 0.03-0.08ppm phosphates, and stable alkalinity (7-12dkh). Test a lot, do what you can to ensure stability, and cross your fingers it makes it through the next six months.
