Anybody tried the Genesis RENEW

Came across a thread on another site from a year ago about the Genesis RENEW, and auto water change system. I have to admit I was quite impressed with the idea and how it works. The fact you can dial in how many gallons you want to change, then over the period of a day it will replace old with new.

The thread itself was really good as the guys who designed it answered a range of questions, but not sure on the etiquette of linking to other sites.

This is the company site Genesis Reef Systems

Has anybody had any experience of the system or know of anybody who has. I'm quite tempted with the idea