The tang police will be called on me for this one. I went to a LFS this weekend looking for a kole tang for my 72g. They didn't have one, so I decided on a small yellow. Then I saw an Atlantic blue and left with both of them. The fact that the store is an hr away added to my impulsivity. They are both around 2"-2.5". I put them in my 20g qt sat afternoon. The yellow is very active and eating well but bullies the Atlantic blue occasionally. The blue is eating but is definitely timid. I guess my first question is, should I keep both of them if I'm planning on upgrading to a 6' tank in the next year or 2 or should I return one regardless? Second question is, as far as qt'ing, I was going to use prazi first but the blue has a few spots of ich now, so should I start with cupramine? Any sort of advice would be helpful.