I finally got my Betta for my office (I live 2 blocks from where I work so feeding him on the weekends is no problem). I found a beautiful little red Crowntail at Petco. He is now in a 5 gallon mini bow which is heated and has filtration. I initially decided not to use the Whisper internal 10i that came with the mini bow as I had purchased an Azoo Palm and thought it would work better. It was a waste of money (only $8.99) as just as much water was comming back out the front of the filter near the intake tube as was being filtered and going out the outtake. It did have an ajustable flow but the filter media was scimpy. Next I tried an Aquaclear for 5 to 10 gallons. Even at the lowest flow rate my little guy was getting pushed around the aquarium altho I may try to modify it with plastic mesh and aquarium sealer. So now I have the Whisper 10i that came with the tank. It doesnt take up as much room in the tank as I thought it would and there is an adjustment knob that lets me reduce the flow to barely a trickle which is just right for him right now as he is just a baby. I dont have a name for him yet. I figure it will come to me eventually as I watch and interact with him. Glad I found this forum as the info is great!