I got one of those wave makers for 16.85 on ebay - 800 gph (prob exaggerated a lil) pretty quiet and has a nice flow they have more powerful ones - not bad if your on a budget
Thanks guys, I think I will be needing something will high flow. I have a shoal of red belly piranhas.
Koralia 6 Magnum.
The tank will be yours very soon....