Hello. I have had a 20g up and running now for 3months. Have a aquaclear 20 filter. Aquaclear 10 powerhead feeding through PVC with a quick filter on the other end. Some natural rocks out of the backyard and fake plants. I am so far enjoying the hobby, but went through a few fish learning the ropes (they are in fish heaven as my 3GS old states). Look forward to the help on AA and hope to give help if I can.