[Sue Truett]

Johnny, I know exactly what you are talking about. In Eric Borneman's first book, he describes acropora and most sps corals are capable of releasing digestive strands called acontia filaments. These acontia are agressive structures used to digest the tissue of adjacent corals, so care must be taken to avoid contact between species. Mine will do this from time to time and IME, it is usually at feeding time for the fish. I had always contributed it to a feeding responce.

HTH...

my 180g ecosystem sps/clam tank:
http://berlinmethod.com/suet/

my 120g ecosystem sps tank:
http://suetruett.homestead.com/home.html

 

[Sue Truett]

Johnny, I found that in Eric's first book. I would imagine though he covers it in his second book too. I don't think that the sps release that only to other sps corals, but any.