i agree with sumpin fishy. get a couple of AC500's (big al's online for around $35) and put the rest of your money in a larger tank and stand. do the right thing for those barbs and don't buy them. they would just end up as food anyway, no matter what size they are with the clown knife. he might be peaceful now but he'll realize he's the predator he actually is one of these nights and the barbs will be gone.
i also havce an xp3. had it for about 3 years, no complaints.
