Introducing two Roborovski hamsters?

[Kristina K]

Alright, I've had my first robo hamster, Dubstep for a little over a month. From my experience, she was extremely timid and shy, so I thought introducing another hamster wouldn't be a problem for her.

However, I got another robo today, Techno, and she's a bit smaller than Dubstep. The store clerk said I should just put Techno right in with Dubstep, and they would be fine together. So, I tried that, but Dubstep, sweet little timid Dubstep, started attacking Techno. I tried to give them a minute to cool down, but the attacking didn't end, so I separated them.

I put Techno in her own cage (I have two ten-gallon tanks I've been using) with her own bedding and everything, but sprinkled a little bit of Dubstep's bedding in her cage. After a couple of days, I'm going to put some of Techno's bedding into Dubstep's cage. However, I'm not sure what other steps I should take. I really don't want to see them fight again.

Should I introduce them in a neutral place, and after how long? Or should I introduce them in Techno's cage, because she'll have been there for a shorter period of time and Dubstep won't be territorial? Is the bedding-swap thing a good idea? Any other suggestions? I really appreciate it!

Details: Have had Dubstep for about 1.5 months, just got Techno today. They're both female.