Cassiopea xamachana(Upside down Jellyfish)

[Veni vidi vici]

I have an out break of these in my tank.Has anyone ever had any experience with them in a aquarium ?I need to know if I'm gonna have a problem on my hands.
TIA

 

[LTCrunch]

they are planktivores... so you shouldnt really have any problem at all

 

[rabidcrab]

thats pretty cool though lol