there are alot of Zeovit products that you can use in non zeovit tanks like k-balance, coral vitalizer, sponge power, amino acids,potassium iodine, etc...
i'm running zeo in my 30gal sps tank, as a kind of trial thing for my future 120 sps.
it's been great so far, 6months in to it now and things are looking better and better.
it's nice because i don't have to use a carbon rx or a phosban rx, just a passive sock of carbon for water clarity, the zeolite+zeobac remove ammonia and phosphates and other bad things.
And you only change the zeolith every 6-8weeks, carbon and phosban are exhusted by then.
Combined that with reefers best salt and things look great, the best PE i've ever seen in my tank.
But there are lots of tanks out there that do not run a full zeovit system or any zeovit products at all and there tanks are amazing.
Not everones tanks will look just like the zeovit tank pics that you see on the forums, it depends alot on the corals, lighting, skimmers............ext.
I just noticed my skimmer wasn't working very will so i cleaned it up and man what a diffrence the colors look better and the water seems cleaner and the PE is even better.
I'll post some new pics if i can find my carmera's charger.