For me... one is too many. While I really would love to have them. I have seen enough people who had them and they walked all over the tank and killed everything in its path. I used to have one in my prior tank that walked and then buried itself in the rockwork to NEVER come out!
I guess when they start pulling each other apart or start beating up on all the other corals in your tank ;-)
I have a friend with 4 RBTA IN A 90g with no problem yet.
hmmm... well I'm on 4 gbta that I know of 1rbta and 1quadricolor... ... and 2 mini carpets... and I'm looking to stock more maybe a nice anemone tank would be good.
I used to have 18 RBTA in my 65g and i loved how it looked, now i have way to many sps and others im afraid of killing so down to 1 rbta and 1 blue carpet
I've seen tanks with over 40 rbta's of various sizes and they were never over 90g.
The thing is these were tanks with tons of sump filtration and few fish outside of clowns.
I LOVE the way it looks but not sure how difficult it would be to maintain and considering the parameters most sites/folks list for keeping these...it feels like having more than 1 or 2 small to medium sized nems with a handful of fish and low level filtration sounds like a bad idea.
Eh, I never know what to think. I mean...I've seen so many tanks that completely defy "the rules".
i agree with above for me one is too many even if i had like a 300g or bigger they are just a menace in my opinion, if you have an anemone tank as long as they get along then you can stock until you please. they should eventually set up their own territories and just stay there unless they decide to have tank civil war