if they are in a war, they will get up to 6 inches long... torch have longer tentacles at 10" sometimes... a galaxia will reach the other side of your tank and kill off everything just to be a dick... LOL...
Yea, I read up on that before I bought them because I'd like to have more than just Hammers.
The only corals in the tank at the moment are the three pieces of Hammer corals and a 3-4" piece of GSP. The GSP is up and away from the Hammers and seems to be definitely happy. Its very full and loving the current its under. (Iam sure in time I will come to hate the GSP since they do tend to try and take over a tank)
As far as fish goes, the tank houses my original Blue Tang (2.5" I'd say) and a very juvenile yellow tang, a Diamond Watchman Goby (I think he is a construction foreman) and an assortment of clean up crew hermits and snails.
I am not planning on adding anything else to the tank livestock wise for awhile. I want to see how the system handles the load it has now for a few weeks before I add anything significant.