I am getting my flowering tent setup and am havibg a couple of issues. I am flowering in a Secret Jardin dr120t a twin tent with a clone/veg tent above an a lower flower tent. Tent dimensions in the bottom flower tent are 4x4x5. I am lighting it with 2 430 watt hps hortilux bulbs powered by one hydrofarm and one sunsystem ballast. I have one 400cfm inline fan to exhaust my tent if temps go above 85. I also have a 400 cfm fan that runs only through my dual cooltube to help with tent temps. My co2 setup consists of a Titan co2 regulator 15lb. Co2 tank and a sentinel Chhc-4 to regulate the flower tents temps/humidity/co2 level.
with my new sentinel Chhc-4 controller and I got most of it set up, Only thing that is confusing me is the co2. I calibrate the co2 sensor as per instructions in the chhc-4 manual because when i first set it up the reading said co2 2617 ppm with no co2 on! I knew my room could not be this concentrated so that’s why I calibrated it. I set the co2 to 1500 ppm after I calibrated it and before I even plugged the regulator into the Chhc it was climbing from the calibrated 380ppm to above 500… When the regulator was plugged in I had the flow set at 5 on the regulator and the co2 came on for about a minute or so and went off… The co2 reading kept climbing and got to over 2000 ppm. I continued to monitor it lastnight and it seemed to keep going well above the specified 1500ppm setting. I turned my regulator down as lowago a little lower than 1 … Cant go any lower without stopping the co2 flow…the fan comes on at 85 just like its supposed to, shuts off when it’s supposed too, I got the co2 and fans set so only one or the other is on at a time… Every other setting seems to work flawlessly like I want it too, but the main feature I bought the unit for isn’t working right… Am I missing something? The dead stop on the co2 ppm is 25 so it shouldn’t go above or below 1500 by more than that unless I am venting to lower temp. I am confused at why the unit cannot fill my tent to 1500ppm and stop. Maybe I have something set wrong although it’s pretty straight forward so maybe I have a defective unit. Any help from other Chhc-4 users or sentinel controller users or anyone with info that could help is most definitely appreciated. Via (only registered users can se the link, login or register)