I love my Betta specific food. I use Hikari Bio-Gold Betta pellets. What I like is that they float. I feed 2 pellets, one at a time, at each feeding and he comes right up the surface and nabs them. I know that I have no food waste floating to the bottom of my tank. I also use thawed blood worms a few times a week. I take a shaving off of a block of worms and put it on a saucer. Then I add a little tank water to thaw it. I then lift an individual worm with a toothpick and hold it at the surface of the water for him. Again, this way I know I have no waste in my tank.