HELP!!

[Humblefish]

sucks to see a beautiful fish die, but bud, that's WAY to small for that fish. tangs are very sensitive and even when they are small they want large tanks. youre best bet was mentioned above. setup a QT and treat the fish and go fallow for a while. think its 8 weeks but @Humblefish can correct me if im wrong on that.

76 days fallow for ich (based upon new calculations - see below):

Let's do the math and tweak the fallow period for ich using the parasite's known life cycle & worst case scenario:

1. Let's say a trophont drops off the last fish you catch before going fallow. We know that the protomont can only crawl around 18 hours max before beginning the encysting process. The process itself takes no longer than 12 hours until it has hardened around what is now called a tomont. 18+12=30 hours, but I'm just gonna call it 2 days to err on the side of caution.
2. The longest known time period it took for theronts (free swimmers) to be released from a group of tomonts is 72 days. However, I want to make it clear that this 72 days has only been encountered once; one study involving a single strain of ich. In most other studies, 7-14 days has been "the norm" for theront release.
3. Once released from it's tomont, a theront must find a fish host to attach to within 48 hours (2 days) or it dies. Thus ending ich's presence in your fallow tank. Although in actuality, a theront's infectivity is greatly reduced just 6 - 8 hours after it leaves the cyst. It's non-infective after just 8 hours, but still able to move for up to 48 hours. So again, to err on the side of caution, we're gonna say 2 days for this "final phase" of it's life cycle.

So, let's add it all up. 2+72+2 = 76 days. That would be the true maximum fallow period for ich. Probably a bit of overkill, but I will make the necessary adjustments to the stickies and start recommending 76 days from this day forward.