I have wanted to go the ozone route for a while but have other things I need to throw money at first. My tank is a FOWLR so to me the sterile environment is OK. I actually dosed copper a year ago in my tank so there are no inverts
I do see small critters climbing on the acrylic at times so I hope someday I can add them to the tank again.
My biggest reason for wanting ozone is simply to eliminate yellow water.... A quality ozone unit is $500+ if I recall plus all the other stuff that goes with it....
I will more then likely buy a bio pellet reactor before I buy a ozone unit.... that is if I buy ozone. For me I think a big skimmer and bio pellets might be my best and safest route to go