this is the reactor I used when I ran an ozone set up.

OctopusOzone1 - who's using ozone?
It's alittle pricey but extending the dwell time makes a major diffrence in water clairity.You will also see a major improvement in skimmer reaction when you start useing ozone.On the down side,if your ORP levels spike it can crash your tank.Best advice I can give is run the ozone as low as you can.Good luck