Adding Media
1. Loosen thumbscrews and remove the lid.
2. Temporarily block the top of the central tube to stop media from going down the central tube.
3. Fill the reactor with your preferred media: we recommend 70% sulfur media and 30% calcium media. Set media plate
between sulfur media and calcium media. Do not overfill the reactor! Leave at least 2” of space between the media and the
top of the reactor. We recommend that you rinse the media thoroughly before usage, even if the manufacturer says it isn’t
necessary
4. Fill reactor with aquarium water.
5. Replace the lid making sure the O-ring is seated properly. Be sure not to spill any media in the O-Ring groove. Tighten the
screws in a star pattern to evenly secure the lid. Do not over tighten.
Install the Water Inlet and Outlet
1. Put sponge into water inlet filter.
2. Cut a suitable length of tubing for the water inlet and outlet.
3. Connect the water inlet and water outlet tubing to the reactor, run the inlet tubing to your feed pump and run the outlet
tubing to the sump.
4. Open the flow control valve.
5. Position the water inlet several inches below the sump water line, in a calm area of the sump. Secure the tubing and verify
that the intake won’t be exposed to air or excessive micro-bubbles. This will avoid excess air from being drawn into your
reactor.
Operation
1. Turn on your feed pump.
2. Turn on the Sulphur Reactor pump for 20-30 minutes, or until the water inside the chamber clears. Take this opportunity to
verify that there aren’t any leaks from any of the fittings.
3. After several minutes, check to see if water is exiting the flow control valve and flowing back to the sump. Once water is
flowing back to the sump, adjust the flow control valve until the drip rate is approximately 2-3 drops per second.
4. After two weeks, use NO2 (nitrite) and NO3 (nitrate) test kits to check the effluent water’s NO2 (nitrite) and NO3 (nitrate)
levels。If the nitrite (NO2) level is higher than 0 ppm, there is no need to test the nitrate (NO3) level as the reactor is still
breaking in and the result would in incorrect. It will take 4-6 weeks for denitrifying bacteria to fully colonize the media in the
Sulfur Denitrator.
5. Allow the Sulfur Denitrator to run for 2 weeks then test the NO2 (nitrite) level and NO3 (nitrate) levels: both in the aquarium
and of the effluent. If the NO2 level tests to be zero and the nitrate level of the effluent is lower than the nitrate level of your
aquarium water, the Sulfur Denitrator has begun reducing nitrate (NO3).