Fresh2o
Aquarium Advice Addict
Even though the amount of CO2 being added is constant, the level of CO2 in the tank will fluctuate. During lights on, plants will consume CO2 bringing the level down. However, during lights out, plants will consume O2 and release CO2. Combine that with fish and microbe respiration and the result is an excess of CO2. This will affect the pH as well.
Since you do not have a solenoid on a timer, you can increase the aeration at night to drive off excess CO2 (air pump or power head on a timer). This should reduce CO2 fluctuations.
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Since you do not have a solenoid on a timer, you can increase the aeration at night to drive off excess CO2 (air pump or power head on a timer). This should reduce CO2 fluctuations.
Sent from my iPhone using Aquarium Advice