That's a good point about the powerhead. I keep forgetting that. It sounds like most people stick one of those in. I've been handing mixing it with one of those wooden paint mixing sticks then I stir it again before adding it to the tank. I'm sure a powerhead will keep it mixed all of the time. Gosh, there's always more stuff to get. Haha. There was a post on here about how much money people have sunk into the hobby. I've been trying to find it because in a short 5 days it's probably close to $550 for a 5g!! And I still have to get better lights.