CO2 does not have to be at a constant ppm, it just needs to be at a ppm adequte to the needs that are related to temp, lighting intensity, nutrients, humidity and water supplied. Basically the higher the transpiration the higher the ppm needs. Therefore it depends on many things. Just injecting more CO2 doesn't provide any benefits unless the other parameters are in line. ie lower the humidity and raise evertthing else and CO2 will increase growth, other wise your just pumping in CO2 for nothing.
I even dry and cure in CO2. Keeps the plants growing after harvest. Eliminates the need for flushing. They continue to use up nutrients stored up in their tissue s and will draw from everthing else before they draw on the nutrients in their sex glands. Their desire to reproduce is amazing. Definitely does not decrease potency or ruin the taste. With use of CO2 and nutrients until harvest the plants are harvested grren and remain green through drying and curing. I actually use CO2 to dispel all air from the drying and curing areas. I simpy use a dehumidifier in the drying closet to reduce moisture. The door is taped during drying. The curing is done in air tight platic containers with a CO2 inlet and out let. CO2 is injected woth the outlet on top left open. After a few seconds the outlet is closed and the CO2 inlet is closed. The cureing compartments are opened every three days and moisture laden air escapes. The CO2 procedure is repeated. No off tastes, no green chlorophyll tastes, no chemical after tastes or bite.
