I have LPS and Zoas. I don't dose anything except a calcium reactor effluent, kalkwasser and do 2x monthly water changes.
I wouldn't dose anything you don't test for. I think a lot of supplements cause more harm than good. I used to dose ,Koralin S, magnesium, iodine, etc. To be honest, I...
You still want to measure it. I use a red sea one. Like everything else there is good info and bad info on ozone. I'm not goint to spew names, but many on the reef aquarium speaking circuit highly tout it's use.
It's most useful if you add ozone to your setup. Actually it is practically required to use a orp controller when adding ozone. Ozone can be a great addition to a reef aquarium if used right. A lot of the best known reef aquarists use it. I just started using it, and the obvious improvement...
Don't believe everything everyone tells you as facts. Especially in this hobby. Always get at least two opinions...or at least make sure you get an opinion from someone you trust.