The Ozone reactor works by mixing the water and ozone in a reactor ... using the wet and dry method, with reverse flow to allow greater contact time between water and ozone.


The O1502 should be situated above the water level of the aquarium or sump water. 

To aid this, the reactor comes with hard pipe connections, but if you prefer flexi, the kit also comes with a 20mm pvc hosetail connector.

This allows you to run the exiting water back to the sump/ aquarium using flexi or hard piping.


Kit includes:

O1502 Reactor, 20mm Ball Valve, 13mm control valve, Hard piping (300mm),  6mm flexi piping (2m), pvc elbow, non-return valve, hard to flexi 20mm hosetail and carbon reactor with carbon media.

Hose requirement: 20mm pvc flexi piping or 20mm hard piping if running over 300mm. This will run from reactor water outlet to sump/ aquarium,


Water Pump requirement : 500lph

Air Pump requirement : 300lph



Inlet 12mm and Outlet 20mm.


Height            : 400mm

Base footprint :135 x 135 mm

Column Dia    : 90mm


  • Instructions

    1. Position reactor above water level of sump or aquarium, to where the exiting flow from the reactor will go.

    Secure water supply to inlet... 500lph to the O1502 and 800lph to the O3002 to inlet on the lid of the reactor. Fit the black control 12mm control valve inline from pump to reactor.. close valve.


    2. Use an air pump which is capable of handling 500lph...Fitting of an air dryer is recommended after air pump where high humidity is present.


    3. Secure PVC 20mm control valve to the bottom outlet of the reactor with valve fully open. Run to sump or Aquarium. Hosetails are provided to do so, you can use 20mm hard piping or flexi as required.. the option is yours.


    4. Fill carbon reactor with carbon. Secure reactor to ozone reactor with screw and nut supplied. Add Lid to chamber, this will allow filtered air to exit the kit.


    5. Run 6mm piping from side outlet on the reactor to the carbon reactor.


    Add power to air pump and water pump.


    6. Open inlet valve till you get a fine jet of water, your looking to have the most pressure with as little water flow as possible.

    Now, slowly close the outlet PVC 20mm valve to increase the water level within the reactor. Keep closing until you reach around half way between ozone outlet and water outlet.


    7. Over a period of 24hrs or so, open and close the outlet water valve till the balance is achieved and the water level becomes constant. Never let the water level rise to or above the ozone outlet. Remaining 30mm - 50mm below the ozone outlet would be optimal.

    Also, never let the water level drop to or below the water outlet. This will allow free ozone to exit the reactor.


    8. Run exiting water from the reactor over a carbon bed or carbon reactor to rid the water of any free ozone before entering sump or aquarium.


    Technical Facts


    Ozone should be applied on an individual tank basis at the equivalent of 5-15 mg/hour per 100 litres of volume. In commercial applications, 0.05 mg ozone per litre of flow is sufficient to achieve a recommended redox of 250-350 mV.

    In freshwater you will generally achieve a lower redox of 250-300 mV mainly because of the bubble size.


    A much higher dose rate of 0.2-0.5 mg of ozone per litre of flow is required to achieve redox levels of 700-800 mV, at which level the water can be considered sterilised but unfit for livestock without further treatment