No idea here. Ive thought about it, but havnt gone beyond that....I have noticed a definite difference running Granular Feric Oxide though. Its been a little over a month and algae has decreased to nothing. I did have to change it earlier than anticipated and ALK drops substantially after initially dosing, but growth has increased IMO. With an SPS only I think its a must. With softies in the mix....not so good probably.
I run UV also so clarity is already good, but ozone has been a thought for the better skimming aspect. It kinda scares me what can go wrong with it though.....and whether its really worth the cost. What are you trying to accomplish with it?