HIGH level of CO2

I double checked my CO2 levels in the flower room with the manual glass tube and saw my regulator must be out of calibration because my level is 3500! I aired it out asap . What should be my next move.Keep it off for a few days;reset for 1500 and run? What effects to my girls should I be aware of? If you can give me some advice I sure need it.This is a 1st for me, damm machines! I should have put this on the newbes

I have no experience with CO2 but I am curious. How long was it at 3500ppm for? How far along are your ladies?

this is like a no brainer fix the timing problem set i back to normal schedule all you did was waste C02 you not gonna hurt the plants going above recommended limits, and they can only use so much at a time so it not like you have to wait to add more. you really didnt need advice, but to actually read about the respiratory system of a plant.

I just hope its not located in your bed room ? be careful with co2, its a silent killer