Zeovit

[Aquattro]

This system gets rave reviews from the europen members of RC, and many of the N. American reefers now are looking into the system. While it all sounds lovely, you need to check Jamie's tank in his TOTM article. His corals are as nice or nicer than anything I've seen in the german sites, and he uses carbon and water changes. Many other nice tanks use minimal additives/techniques/tricks to achieve these same results.

The zeovit system, while it sounds like it does work, might be a bit pricey by the time you purchase it in Cnanda. And I think you can get the same results without it.