I ran full zeovit for the past 6 months. I found it did color up my corals and was a good way to know exactly how much your putting into the tank as far as nutrients and such. Unfortunately it was like running on a knife edge for me and I had several crashes from low/high alk. If my alk got down to 6.5 corals died, if it got up to 7.5, corals died. Sweet spot for me was like 6.8 to 7.2 but my tank eats .3 dkh per day. So you can imagine how easy it would be to nuke stuff for me. I also went from using kalkwasser to straight water for make up because the evaporation rate depending on the weather could lead to swings that were too big. Especially if I over did a water change by a couple gallons and didn't need to makeup for a couple days.
I'm currently switching to a remote deep sand bed/possible refugium design as I want to run something more stable so I don't lose corals all the time.
Now, please note, i'm only a 2-3 year reefer and have had very little luck with acro's. digi's and birds are okay, but I've had trouble with acro's. I'm sure you pro's could run zeo much better than I.
Other problem was it seemed like the best place for advice was the zeovit forum. There were like 2 pro's on the forum that pretty much answered everyone's questions daily. It was a weird feeling like the whole zeovit system was backed by these 2 people and no one else had much input.
I also went with ALL the recommended products, from the reefers be$$$$t salt, recommended zeo brand zeolites, to the Korralicht (spelling?) carbon, to about 8 additives. I have several bags of zeolite and a full zeostart3 if anyone wants to buy them. Even a full bag of zeovit carbon.
I also had one crash when I forgot to change the carbon one month, so it went 2 months. Then when I changed it all my acro's nuked. I think it might have had to do with water clarity getting much better but not sure.
The pumping the zeolites twice a day wasn't too bad but sometimes it was hard to keep up with the dosing schedule. I'd forget some mornings when I had to rush to work or had a busy family night. Also, i tried dosing the zeostart to make it easier but i'm not sure I had the mixture right, had a crash and went back to dosing by hand.
let me know if you have further questions