Ozone is a gas and it will come out of the returns or in-floor cleaning nozzles, but the amount is determined by doing the proper adjustment on the ozone unit metering valve.
See Clear O3 install manual to adjust valve.
Look for a suction leak in these places.Loose pump lid or dirty or cracked lid O-ring, air leak on pipe going into the end of the pump where the pipe threads into the pump, pool water level too low so skimmer is sucking air. If the pipe from the skimmer or main drain is plugged or partially blocked this can cause cavitation which puts air into the pump. A leak at the pool equipment and plumbing above ground will allow air into the plumbing when the pump shuts off When the pump turns on that air will go back into the pool through the cleaning nozzles or pool returns.
