This may be an assumption. I understand 'full zeovit' system to mean they are using 4 key components: 1) Zeolites in a reactor, 2)ZeoBac (micro organism solution), 3) ZeoFood (bacteria and coral food) and 4) ZeoStart.
This system is your means of nutrient export. It takes place of your refugium, GFO, Bio pellets, etc.
The other products like amino acids and color ehnacers are not key elements to full zeovit, and can be used independantly of the zeovit system.
That is how i understand it. I am very tempted by starting a zeo tank. I have already bought a reactor and the 'big 4'. The dosing regiment doesnt bother me, I am mildly OCD. The pastel colors kind of bother me though. I may try it for a year to see what happens.