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You hope that it is ICH free. You cant really know for sure because you did add wet items being corals and inverts. There can be Ich in a system and it doesn't show up on fish until they are stressed.Hopefully you are right and don't have it but this is not the safe way to operate. you should QT all inverts and corals.I had to do that for 8 weeks fishless to remove all ich from my DT. However in between that 8 week period I’ve been adding corals and CUC and after I put my fishes in, my tank is ich free. Like the other mention early, there is always a risk by add invert and corals. That risk is very low, since ich need a host to survive.
You should only do that if the invertebrates are coming from a completely fishless systems (and few do). You do need to choose your fallow time period carefully. The minimum is 45 days, at higher temperature (81+). 8 weeks at 81 is better, and if the tank is at a lower temp, you should go longer - up to 14 weeks. That said, time and time again I hear of folks running fallow, and then when the time is up, getting new fish. Those fish get ich and they think the fallow period failed. Actually, not properly quarantining the new fish was where the failure was.If l encounter an ich outbreak and choose to go fallow for two months, can l continue to add coral/inverts for those 8 weeks? Jeff