I think I should point out that I while I do believe there is some credibility to the theory of diffuse competition, I do also believe that the chances of it happening are in the minority, and also minimized by "good tank management practises." If the tank is healthy, and the anemones healthy, it seems perfectly reasonable to me to assume that even a low-level aggression if present, might just be cheerfully ignored and have no effect whatsoever.

I think it comes down to common sense -- if a tank is 'overcrowded' then we can just assume that there are risks associated with that. Whether it's just stress, or the potential for a tank crash, or whatever. If a tank is not overcrowded, managed carefully, regular water changes, or whatever ... that tank stands a reasonably better chance at "long term success" than a tank that is not carefully managed. Of course there are always exceptions to the rules, but in general I mean.

I'm not really trying to change anyone's opinions (not anymore anyways, I admit there was a time where I kinda did)! Just looking for answers to my own questions, and this is one of the things I do wonder about sometimes.

Would love to hear other people's thoughts on this topic if they have any.

Tony ... I appreciate your views on this because there is no arguing with success :smile:

Cheers