Instar hit it on the head! Any detectable NH3, NO2, and NO3 is detrimental to the anemones health.. BTA's require as much intense 10k light as they do actinic, so a good mix will help. Maybe change one of your bulbs for a pure actinic bulb. Then just wait for the dust to settle after all the treating and such. If you question weather it will live you can bring it by and I will babysit for you. I have brought back more than one anemone from a near death experience.....LOL..... I am currently growing a RBTA and a green/purple equadracolor under two 96w quad pc's in the cube tank. They are fed 4-5 times per week.
Tim Marvin
(512) 336-7258