I kind of like xenia .... ?? Aiptasia is considered "bad" because it has the capability to sting corals for which one may have spent a lot of money, but xenia doesn't damage corals, so I don't know if it's an entirely fair comparison (to each their own of course!
). It just walks around the tank, so if you like a place for everything, and everything to be in it's place, then maybe xenia is not the best for you. But it's not really all that hard to control, either?
Just food for thought, but there are setups that involve using xenia as nutrient export. Heck, there are those that use aiptasia for same (Calfo's book on coral propagation talks about this..) So even the "pests" can serve a useful purpose... sometimes .....
(I'll, uh, stop talking now, since it kind of seems the Calgarians have invaded the Edmonton forum ????? :shock: )