Thats normal if you see like stringy gooie stuff coming out of it(Waste products come out from the mouth and found around the body too). I have a bubble tip sea anemone in my tank also 29gal. My tank has been set up for about over one month water is 1.024 salinity, 76F, pH 8.2, Ammonium, Nitrite 0, Nitrate 5. I do weekly 5 gallon water changes too keep all levels up especially calcium. Other than that somewhere around those parameters should keep your anemone in good health. I forgot to mention I need better lighting soon or else I don't know whats going to happen with my BTA. I'm running a 20watt floresent bulb stock hood lighting on my tank. Thinking about getting a USA Current Sattlellite Power Compact
