You could use 2 Oxydator As with 2 catalysts and 12_% peroxide but try 9% first then move to 12% if all well which it should be. The downside is the peroxide will only last you about 5 days at 12%. The model W would give you much more peroxide capacity.
With Oxydator's you simply fill and install. No electricity and very safe to use esp once you establish your tanks requirements level of catalysts to % of peroxide which is not difficult.
Ozonisers need a power supply, ideally a redox controller and best run with an air drier. Probes need to be cleaned and calibrated regular, you might smell ozone in the room, ozonisers can fail and will at some point so will require replacement. Now you might consider that I am against ozonisers and that I am being overly harsh on them and that you can run them without a controller. However compared to Oxydators there is much more to go wrong. I do like ozonisers but I have found Oxydator's much more to my liking along with easy of use.