Setting The Co2 Flow; Routine Maintenance - CoralVue REEF OCTUPUS OCT-CR100 Instruction Manual

OCT-CR100 / OCT-CR140 / OCT-CR140D

Setting the CO2 Flow

Start with a bubble count of about one bubble every 3 seconds. There is a lag time when you adjust the bubble count since the hose has to accept
any change in pressure. The bubble count will not happen immediately. Slowly increase the CO2 flow until the effluent water is within the 6.6-
7.0 pH range. It will take a few hours before a drop in pH is noticed. Any adjustments made will have a lag period of a few hours. Remember
the effluent water is coming out slowly and it takes a while to get the circulating water within the reactor to the output. As a guideline it should
have between 25-35 bubbles per minute. Monitor the CO2 injection by measuring the effluent PH. Use the bubble count as a visual reference
only.
DO NOT drop the pH below 6.5. This low pH could turn your reactor media into mush or mud.
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Monitor the pH closely for the first few days. If the system pH drops, then slow down the flow of CO2. Monitor your alkalinity as well. It may
take a few weeks before you see any increase in alkalinity.
DO NOT let it rise above 14 DKH. Remember each system is different and settings will vary or have to be adjusted from what is

recommended here. When adjusting your reactor, do it in small increments. Adjust the effluent first then adjust the CO2 flow. Measure the
effluent pH and maintain the 6.6-7.0 pH.
For dual setup only – The effluent of a dual chamber reactor should be measured from chamber 1 before it goes into chamber 2.
If you cannot, do this, then the effluent pH of chamber 2 should be about .3-.5 higher than chamber 1.

Routine maintenance

Check the effluent flow rate and CO2 rate periodically.

The bubble count will become erratic when it is time to refill the CO2 cylinder.
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Every so often the media containment sponges should be rinsed out well to remove any buildup that has occured while in opperation.

Refilling the media should have to be done every 3-4 months or when the level has dropped about half way. If the media becomes mushy or

muddy, replace as well.
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NOTE :
Increasing the CO2 feed will cause the effluent pH to drop, and raise effluent alkalinity.
Decreasing the CO2 feed will cause the effluent pH to rise, and lower effluent alkalinity.
Increasing the effluent flow rate will cause the effluent pH to rise, and lower the effluent alkalinity. Decreasing the effluent flow rate will cause
the effluent pH to drop, and raise the effluent alkalinity.
Get the tank alkalinity set to your target level, and your calcium level will fall into place.
Patience and persistence is the key to getting your calcium reactor to work properly.
If you have any questions, please visit our website, email us at support@coralvue.com or call 1-866-277-9078.
Instruction Manual