The anemone you are referring to is Heteractis magnifica, what you read is wrong, they are difficult to keep in captivity. I have owned one, they tend to suffer the same fate as the Sebae (Heteractis crispa), it just takes them longer. The advice offered by EMS503 was sound and that's why I did not jump in this thread, I would assume that is why Mark hasn't gotten involved as well. H. magnifica likes lots of waterflow and lot's of light. It is a wandering anemone and in my case, that is what finally did it in, it will search and search until it has just the right combo of flow and light. You probably have enough light, maybe enough flow, but is there that one spot in the tank that has exactly what the anemone is looking for? Maybe, but doubtful. I would not recommend this anemone, especially if you have corals or other anemones, cause as it roams your tank looking for the right spot, it will raise cane all over the tank. Thjis anemone also suffers the same collection problems as the H. crispa (although it is not as quick to bleach), they like a rocky substrate and when they are collected they tend to get rips and tears in their foot. This can often lead to infection that is not detectable until you wake up to a really big anemone fouling your tank.