Okay, I have my lovely boy Persica living in a 5 gallon tank with no other fish, and I was wondering what type of filter would work well for him. I want something that doesn't create much current so he'll be happy with his water. :) Also, I want something that doesn't disturb bubble nests! He had a nice bubble nest made in the fish store, so I know he's going to be quite the nester! And I don't want a filter destroying my boy's artwork. <3 I've been looking into the Tom Mini Internal Filter. Would this be a good one? Any other suggestions?