Okay, so I've got a 100 gallon tank in which up until a week ago the only inhabitants were 2 percula clowns. Five days ago I added 3 tangs - one yellow, one purple and one blue. Up until about a couple hours ago they were all doing just fine. All 3 were swimming around, eating, being social. The yellow and purple were NOT fighting. They were all even cool with my cleaner shrimp.
Then i come home today and notice that the purple is not there. The lights come on and I finally see the purple, in some far corner of the tank. I totally thought he was dead. Everyone else was out and about. About half hour later he sort of comes out and I'm waaaay thankful he is not dead. Then I see the yellow just attack him. Nipping at the fins and all that.
Long story short, I think maybe the reason for this aggresive activity was because of a lapse in feeding on my part. I know tangs of the same size can have issues but these 2 were doing just fine and dandy. Intoduced at the same time, about the same size and all that. I think I might have been feeding them not enough. As soon as I put another strip of seaweed and fed them, I noticed all hostility cease.
So everyone is fine now, except I think purple is about to die. He was waaay unbalanced, and got stuck on the powerhead once. He is basically resting against a rock now. I don't have a quarantine tank and all the stores are closed right now.
What I'm wondering is if I can place the purple tang in one of the partitions of my sump. In the middle partition where the refugium is going to be, there is some live rock and the water flow is okay I think. If I can even get to the purple tang, can I place him here temporarily as a sort of quarantine?
Here is where I want to put him: