I had one in my 72g reef tank with 3 PHs. Loved it. Simulated 4 different levels of current flows. 2 were dedicated to reef. Has a feeding button. When pushed, it turn the PHs off while you feed for about 10 minutes.
Also, has the night flow - you push the nite button on the first night and it remembers to do itself 24 hours later, I believe the greatly reduced nitetime flow last for about 8 hrs each nite.
How much didja find it for? May consider selling mine. It's about 2 years old and in new condition (sorry for the shameless plug in this post