I would have to find a way to turn it off.You may want to do some research before using ozone. Ozone is toxic to humans. Usually carbon is required to de-ozone. Ozone kills nitrite which prevent your bio filter from building full strength. Any disruption in filtration will result in a spike.
That's what I was thinking.Nice set up. I would make a thread in the filtration section. See what options other members come up with