I have a 16G Bowfront aquarium without anything in it at the moment. I have a betta fish that would love a lesser current in the tank he is in right now and I would also like to display the 16G with him in it. I would like to know what filter would work best with him. I want to use an over-the-top filter- I just need to know a brand that would have a lesser current with it. Possibly the AquaClear? I was going to also add some neons and a flower shrimp.