well I looked in his tank, and the statement that there would be no algae is false. He must have cleaned his glass recently when I first saw it. He is running ORP . His glass is just like mine, brown accumulation after a few days and off with the magnet. He staed that the ORP would make that impossible - and thats why it was appealing. I just wanted to make sure I wasn't spending $ for no reason. My set up works for me, that's what I will stick with. I think people do what they are comfortable with. If I don't know exactly what and how ORP works - then it's likely a risk for me. Thanks for that comment though cuz you are right. I haven't seen a tank without, and 99% of my algae is the good stuff. I just be happy!