Much of the BS on RC over zeo is from people with finaical motives posting that zeovit was the greatest thing since the skimmer. There was a rather dishonest attempt at gorilla marketing on RC by the Zeovit hardcore. RC in true RC fashion has since overreacted and now honest discussions of Zeovit get edited or even removed.
Bruce zeo has its own entire forum if your interested.
ZEOvit.com Forum - ZEOvit
In a nut shell zeo uses a carbon source to grow elevated levels of bacteria in the aquarium. The bacteria drive down both NO3 and phosphate to extremelly low levels. The bacteria is grown on zeolite rock in a reactor. Ever so often you shake the rock dislodging the bacterial mulm some of it is removed by the skimmer some of it become coral food. Another part of zeo is the regular use of a amino acids.
Basically the system becomes very nutrient poor and you feed to increase your bioload(feeding and fish) and still get good SPS color.
IMO
The plus:
Higher bioload more fish more feeding and you still get good color
The minus:
It's expensive(the stuff is all imported from Europe and whatever in it or not your working against the weak dollar, that can't help a Canadian either.)
It makes your tank less stable. I done things to my tank that would kill it if was on Zeo. How would of a dKH of 16 work out on Zeovit(CR problem). The tank would have crashed. You have to run NSW or lower levels or Cal/Alk or you can't run Zeo and to me that doesn't leave you with as much wiggle room when you have a tank full of SPS.
The one variable that the Zeoheads don't seem to give any credit to is the fact that most of the crazy beautiful Zeovit tank would have been jaw dropping without Zeo. If you look thru any of the big name zeo based system you find that the reefkeeper had allready pushed everything to the max. No dollar spared. BubbleKing, RedDragons, nothing to expensive for their reef. A knowledgeable reef-keeper running a fortune in the best equipment WILL HAVE A GOOD TANK zeo or not.
Jason, your last tank was awesome your new tank won't be any less zeo or not.