First welcome to Aquarium Advice!!
Second, there is not enough light on that tank for host anemones.
Third, your water isn't quite perfect, your CA
are out of balance, your CA
is to high (asking for a precipitation event) and IMO
(salinity is measured in ppt
) is a little low, also you don't mention a temp, but I see from your listing in your profile that you have a chiller. I am also curious as to how your tank is set up, does the chiller run on a closed loop, or is it pumped sump to tank, or sump to sump, or ...
My first recommendation for keeping anemones would be to double your light. Second would be several water changes to get your balance back in order and increase your SG
Do you feed the anemone? If so how often, what, and what time of day?