First anemone...need some help with it's looks.

I just recently purchased my first LTA. I've had it for about 3 days now and it attached itself to a rock right away and hasn't moved. I fed it couple times and it did eat, but as I look at the mouth, I've been reading the signs of unhealthy/unhappy anemones and idk if this would be a sign. My water Params are stable. Salinity 1.0026, phos 0, dkh 8, calc is a little on the high side of 480, ammonia 0, nitrate/nitrite 0, 8.2 PH. I've had the tank for about 4 months now. I have 2 clown fish, yellow tang, sailfin tang and a blenny. Some SPS but mostly Lps. I'm leaning more on getting rid of it because I'm just afraid it'll take a **** on me when I'm not home and there goes my tank. Here's some pics....some info would def help.