The best replacement for ozone is chlorine.

The best alternatives to ozone are rated as following:
★★★★★  chlorine
★★★★  uv
★★★  oxygen
★★  opera mini
★★  waves
★★  bad ozone
★  ionizer
★  t-racks
★  hydrogen peroxide
★  skt
★  saltwater pool
★  carbon filter
★  salt water pool
★  salt water pools
★  smog
★  alloy
★  fabfilter
★  wavelab
★  skt t1
  negative ions
  t racks
  salt pools
  chlorine dioxide
  greenhouse effect
  ion
  o3
  negative ion
  salt pool systems
  tracks
  skt1
  global warming
  uv sterilizer
  samsung saga
  white shield
  chlorine pools
  salt chlorine

Your alternative for ozone is not listed? Suggest!
Speaking about ozone, one probably shouldn't forget about chlorine.

Other search terms related to ozone and their ratings are:
★★★★★ chlorine
★★★★★ alkyne
★★★ dimethyl sulfide
★★★ alkenes
★★★ uv light
★★ protein skimmer
★★ far infrared sauna
★ potassium iodide
★ uv
alkynes
You have in mind a companion for ozone and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of ozone in all years. Click on graph for more.
ozone
chlorine
uv