Xenia tends to be a wild card. For some reason some people cant grow them at all, while others have it taking over the tank. I havent heard an explination as to why, but that seems to be the trend.
I have had all of the corals you mentioned except the Galaxia. Here is my take on them
Frogspawn....easy to maintain given the right light. Proper Ca
levels and it will grow like crazy.
Tortch...basically the same as the FrogSpawn.
CandyCane...Light shy. Tend to be touchy. One day they are doing great, the next they refuse to come out.
Starburst...are you talking about Green star polyps? If so...you cant kill them. Mine were out of the water for several hours and they still made it. (the movers left them on a plastic mat thinking they were just a rock
Plate corals: Short tenticle variety tend to be more hearty than the long tenticle, but that still isnt saying much. I would avoid them short of being given one for free.
Galaxia...these guys are the some of the coolest looking LPS
corals you will find. The down side....LONG sweeper tenticles that pack a very potent punch. That is the reason I have yet to get one. IMO
, you need a large tank with a lot of rock so that you can give it the 12 inch radius they need (obviously, the size will effect the radius needed. But a softball sized Galaxia will need 6 inches all the way around.) I have a 175 gallon tank with 400lbs of LR
and I dont think I have a tank big enough to house one.