All plants will require co2 using higher light.
It sounds like you have plenty of ferts, and plenty of light. So that only leaves, what? CO2
You can lower the demand for both nutrients and CO2 by lowering the light, the intensity, not the duration.
Think of light as the gas pedal in a car. The more you press it, the more gas you better have in the tank. CO2 and nutrients are the "gas" Light is the accelerator
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