3 inches or a little under. It was either let him die in the fish store or take him home to what I can provide. Here's a pic of day one and one week later. Huge improvement on the dorsal fin.
If the tang police want to buy me a bigger tank I'm all for that, otherwise I'm doing the best I can
I agree that adding fish to the quarantine will prolong it but after one week does it really matter? I wouldn't do it If the tang was a month in. I'm not sure if quarantine is a good word, I won't be dosing meds unless there's a problem. It's more a holding tank to make sure they're eating. But anyway, this is why I posted the question, because I don't know if its a good choice. I understand tangs need room which is why I went for 30 inches of swimming length and sold my original 30 gallon half moon which was almost 30 inches vertical. I don't have room right now for a larger quarantine. I haven't bought the chromis yet because I'm not in any rush, but like most people sooner would be nicer.