I think theres adequate resources to be found here in this forum without asking, but Im not sure where you would want to take this knowledge...?
In other words, what are you getting at? What do YOU want? What is it you want to see in your tank, should you go mantis?
I would put a peacock in a 30g tank, with a titanium heater. If you put in adequate amounts of sand (DSB, preferably) and live rock (like 50lbs.) with a good protein skimmer, you won't need a power filter.
Peacocks rock. Getting a little tougher to find, but that's the route I'd go.
Yes a peacock will get rather large considering around 6-8in at least...and from my understanding pack quite a punch...Im content with my little 2in N. Wennerae..although she is at roughly max size i dont have to have a large set up or a titanium heater due to the fact she isnt strong enough to take down large turbos let alone a glass heater...I think Chip has the right idea on tank size and heater...
