I dont' think a 100 is going to work for you. I believe you will need a minimum of 200 mg/hr model. That being said, I would suggest that you get a 300 instead of a 200. It is better to over size it just a bit if you can swing the extra cash.
I have just ordered a 200 mg/hr red sea delux unit and I am waiting for it to arrive. I was planning to go with a 100 mg/hr unit. However I bought mine through premium aquatics and they had no 100 mg/hr units left in stock. They discounted the price by a few dollars, so I went with the 200 unit.
Also if it helps, I just checked on e-bay and there are quite a few ozonizers available. If you look at e-bay, check ozone generator, and also check ozonizer. There were a few spa tub units available and I would think they would do a great job and the prices seem very reasonable.
