Well they won't be in the tank with the betta for to long anyway, I just have to cycle my other tank. My grandma is out getting what I need right now (Also had to get rock)
So far, they havn't bothered my Betta at all really. Sometimes they swim right on my betta and he doesn't even care. He is a very laid back Betta.. lol. During feeding though the bigger one did bite Jesus, this happened once yesturday and once today. But other than those two times, he hasn't messed with him at all. They get along fine besides that.