I need advice. I have a 125 gal established tank with the following; 3 purple fire fish, 1 yellow tail damsel, 4 Bangaii Cardnels, 2 Black & White Heniochus, 1 Desjardin sailfin tang, 1 Yellow tang, 4 Pajama Cardinalfish and lastly 3 Tank Raised Perc Ocellaris. The three clowns have been in my tank for about 5 months. They are about 1.5 inches long. At my local pet store they have a mated pair of clowns that have been together for about 5 years. They are about 2.5 inches long. I have a 29 gal hospital tank that I run all fish through before adding them to my show tank. I would like to add the two older clowns to my tank. One expert at the store seems to think my tank is big enough and that the clowns would have no problems with each other. The other expert says the two established older clowns could kill my existing three clowns. It is imposible to fish out the three clowns in the show tank. Lots of rock and corals. What can I do? Could I add the two clowns to my show tank? Or, could I keep the two older clowns in my hospital tank perminently?