Is the wandering anemone reef safe?

Hi guys,

I've just been offered to keep some of my friends marine fish and anemones. I haven't accepted yet, but I thought I'd get an opinion on something first. I'm familiar with a few of the species he has, but I hadn't seen the anemone he has previously. I've ID'd it as a wandering anemone (swimming anemone/baked bean anemone/beach ball anemone). The link to the details of this particular beasty are here. http://ift.tt/1Vnkqhd

I was just wondering if this is safe to keep in a tank, and if anyone has one or could give me advice on the best way to keep them.

Thanks,
Andy