I paired mine with no real problems...You have to be patient and the first rule of thumb is dont buy 2 at the same time unless one is a lot bigger than the other one. What I did was buy one and 7 months later bought another small one{small as you can get} I used a floating acrylic fish fry protector that I put it in and sank it down by the anemone that the other clown had been hosting in. I would refloat it at feeding times and then resink it by the anemone. After 2 weeks and the two of them seeing each other a lot I finally released him into the open tank, The first thing that happened is the little one went right after the big one and than got prompty stomped into the rock. I thought the little one was going to get killed but he hid in the rock and the other one left him alone. As the weeks progressed the big one would allow the little one a little closer to the anemone until after about 3-4 weeks they were hosting together. Dont know if this method will work everytime but it worked well for me. I also have them in a 90g with a lot of live rock. Good luck...
