It is not proven that anemones need metal halide intensity to survive. I know personally a tank that has 4 anemones, 2 bubble tips, rose, and sebae, survive for 2 years now under 4 watts of PC.
Does this mean they will not do better under halides? No. I believe and know halides are much better for them. However, survival under PCs is also very possible. I was telling him to get more watts specifically for the corals. I know he cannot keep acros and sps under PC, but there is a lot you can keep as well.