http://www.carlosreef.com/AnemoneFAQ.pdf
"Anemones are shallow water, photosynthetic tropical inverts. They all require bright
lighting in order to thrive. A few species (E. quadricolor and S. haddoni) will thrive
under bright VHO fluorescent lighting, but for the most part all other species require very
bright lighting that includes metal halides."
Yours is heteractis malu, and requires VERY intense lighting to thrive.