In your opinion, is air filtering more or only important? So that we are sure that there is no o3 left because its bad for human healt? Or water need be filtered as well? Because even small dosage of o3 can make enough byproducts(bromates?) to be toxic for tank inhabitants?
There was reports from people who use o3 on skimmers with apparently no ill effects even without effluent filtering. Maybe that is no so important with small dosages, or carbon reactor elswhere in system is good enough, hmm
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