If you were having trouble with an easier anemone, you should have waited until it was recovering before trying a harder to keep one.
That aside, have both anemones planted their foot and staying put now? I do think this is tied to lighting. With things turned so low, it isn't enough. I'd turn it up 5% a week and stop around 65-75% and hold their. After a month things should start getting back to normal, if not up another 5%.
The thing about LEDs is that they penetrate water extremely well. With 18 3 watt LEDs, at 64 watts total, might be too much at full blast for a small tank. On my reef, I max my radions out at 75% and it gets turned down to 50% and slowly adjusts up over 4 weeks. Something time will tell.
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