the concept of zeovit is interesting and the debate is even more interesting...
on the most part...what i have gathered and read...
those who swear that zeovit doesnt work or is pure hype...interestingly, have researched it but never used it or used it incorrectly. claims upon claims that it is snake oil and the such are the typical responses of the nay sayers and that there are many methods to achieve the same results. to this, imo, i will say that this is true...true because it is true in your own mind and if it is true in your own mind...no amount of verbal discussion or convincing will get you to believe that zeo works, the world is flat or that elvis is not really dead.
yes, i have seen really, really nice reef tanks without zeo...tanks that make you go 'wow' and of course, i have also seen okay tanks without it as well. zeo is definitely not the saviour of reefing...i dont think anything is without some form of maintenance. it's like buying a ferrari and never maintaining it...eventually, because of neglect...the ferrari will eventually be overtaken by a kia.
i very very grudingly started using zeovit as a last resort and if i didnt see the results i am seeing, i would have immediately stopped using it...i dont care about having and braging about 'this' and 'that'. i just wanted a spectacular reef tank to come home to.
there was just something 'missing' on my system that wouldnt give it that 'oomph' i wanted. it was not the lack or husbandry or the misunderstanding of reefing...for some systems...i think it needs that extra component that zeo provided.
if you look into the core of zeovit...it is not equipment or gizmo's that make it work...the principles are similar to what a dsb does...using nature...the zeoliths absorb ammonia...absorbing ammonia immediately and taking it out of the water column has one result...no conversion to nitrite and nitrate. there is a bacterial component that replicates the oligotrohpic (read this on the zeo forum..i am not a marine biologist) conditions that are found naturally in oceans. the nitrate and phosphate reducing components are by far the most effective i have ever seen. so effective that i had to take my refugium down as there was ZERO nitrates and phosphates in my system. this was something that i could never achieve...getting my nutrients so low that chaeto wouldnt grow.
zeo, imo and from what i have read, is the furthest thing from anyting techno. it goes back to the basis that mother nature is the ultimate method. the only gizmo that zeo recommends is really good skimming.
i have tried almost every gizmo out there to try and achieve the results i am seeing with zeo...double beckett skimmers (not dual nozzles...TWO HUGE separate becketts) running along with two smaller ER's...ozone injection, about 8 pounds live rock per gallon of water for more biofiltration, rowaphos, purigen, phosguard etc, etc, etc...the list is too long. in addition, i am not in lacking for good husbandry behavior.
dsb's, ime, have been great in the beginning but have all met their fate, again, ime, by eventually becoming messy settling chambers. i loved refugiums but it never got my nutrients low enough to have the tank that i wanted. on the zeo forum...there are reefers that also use dsb's...so this is not a contraindication.
the talk of a lot of reefers is about nutrients is nitrate...nitrate, nitrate...nitrate. while nitrate is a component for nuisance algae like hair...the real culprit is phosphates...get your phosphates down...way down...in the 0.02 range and you will see incredible things start to happen. not only does phosphates spawn nuisance algae...but it affects coral health as well.
as i said before...zeo is not for everyone...as i feel it, like anything completely new in thinking, requires a steep learning curve...but for those who use it correctly...the results CAN be breath taking.