Will different Zoa colonies attack each other?

[Bud's Reef]

I started out with a nice plug of green zoas and wedged it near a rock I wanted them to grow over. I was immediately getting good growth on the plug and onto the rock where I wanted them. I got five more small asst frags and put them around the same rock. My nice green ones started to wilt away and each day a few more would die. Two of the new frags also began to have one polyp die every day or so. I removed all of the zoas dipped them and put them into a tank I just set up for this purpose and they seem to not be dying anymore, but I haven't seen any new growth. Unfortunately, the original green plug all died before I could get them moved. Any ideas?

The upper right was the original which has completely died, the orange on the upper left lost most of the one color, and the light blue lower left is the other one that started dying.

 

[MTB]

Why yours are dying, I don't know. I had a rock with 300-500 polyps melt away. There are maybe 10 polyps left on that rock. I have a frag of those same kinds no more than a foot away that are thriving.

 

[Echidna09]

If they are all Zoanthids, they should not attack each other. Many people set their zoos up so as they grow the different colored colonies will collide to create a 2-tone rock.

 

[planton]

my zoas melted away when i get no flow through the colony, it rot like zenias when they dont have clean water and some flow.

 

[Bud's Reef]

I've been reading other posts here about problems with zoas dying and after reading the one about the white spots I inspected my colonies and sure enough I have what looks to me like the same white spots on at least one of them. I'm going to try to find the listed cure (Furan-2) locally, but if I can't it looks like DRsF&S carry it.