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New to CO2 some advise please

Tentpitcher

New member
Running CO2 in a room which is sealed with lights and gets vented when the lights go off. Using tanks and an Autopilot controller.

I have the controller set to 900PPM so it essentially turns on at 850 and off at 950.

My question is this: Is anyone dropping CO2 levels at some point in flower and if so, what is the recommended PPM to which to drop it. Currently at day 50 with 10 week strains.
 
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