This is a difficult question, as different circumstances in an aquarium result in different water conditions. Therefore, e.g. the fish/water relation, quality and quantity of feed, the filter system and several more criteria are very important.

As a rule of thumb the capacity of the ozonizer should be calculated by 3 to 5 mg per 10 gallons of water. This empirical value is the result of several years of experience. The dosage for intensive breeding stations or aquaculture systems is usually much higher. To avoid over-dosaging we recommend the use of a Sander redox control meter.