most shrooms are pretty stingy.....border your shrooms with zoos that lower on your "like" list
......it's what corals do naturally.....compete for space.....in most cases, if you try and mix different kinds of corals one will pack a bigger punch and end up winning (to varying degrees....sometimes just receding a little and other times out right annihilation)
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260g mixed reef, 105g sump, water blaster 7000 return, Bubble King SM 300 skimmer, Aqua Controller Jr, 4 radions, 3 Tunze 6055s,1 tunze 6065, 2 Vortech MP40s, Vortech MP20, Tunze ATO, GHL SA2 doser, 2 TLF reactors (1 carbon, 1 rowa).
http://www.canreef.com/vbulletin/showthread.php?t=50034 . Tank Video here
http://www.vimeo.com/2304609 and here
http://www.vimeo.com/16591694