I have finally read the two big aefw threads after I unfortunately found out that my tank was infected. My interest was piqued when I had two validas on opposite sides of the tank start to look bad, and one of the threads stated that validas were one of the faves of these pests. I am currently now contemplating treatment options, but none sound to be good at this point for in-tank use. I have too many collosal colonies and removing them is not really an option without destroying my tank. I want to back up a step first and share some of my basic observations and get others' input. The more we understand about them, the better our chances of success in treating in the long term. I seem to have noticed that there may be a few (at least) differents species people seem to be affected with. I base this on differences in photos and on behaviour on corals that others have posted. I seem to have two distinct (different life phase of same species?) types in my tank. One is large (several mm) and the other is extremely small (roughly on the order of one-hundredth of the size of the big ones). I have never posted photos before so bear with me as I try to do so.