I've shared an image of this reactor below. The water goes in the top and comes out the bottom, and it seems co2 connects at the top. So far so good. I'm trying to understand the function of the 3 small outlets pictured on the left of the reactor body. The instruction manual says, "The Co2 diffusion rate is user selectable, and is selected by puncturing the diaphragm of one of the regulator fittings provided. The resultant co2 diffusion rate increases from the top regulator fitting which yields the lowest rate to the bottom fitting which yields the highest rate." How does putting a pin hole size leak in the side of this reactor change diffusion rate? Thanks in advance!