Room Mixer and Pressure Control

2 mixers. 2 Volume Pumps, Small tank, Gas Sensor, 1 IC,.. I suggest two or more passive vents on the vent control from room, and 2 or more on the input to room. THis uses Mixers to mix the proper ratio of Co2, O2, and N2 for room atmospherics. 78/22 On the N2 O2 mixer, that is disharged to the Co2 Mixer, then blended at 92 /8 to the storage tank. I have it set to maintain 1500 to 1000 Kpa in the tank as Air is used in the base rooms. THere is also a pressure control that will keep the base (rooms) at proper pressure. d0 = gas sensor d1 = small tank d2 = O2/N2 Mixer d3 = Co2 / O2N2 mixer d4 = room input volume pump d5 = room output colume pump You can set the volume pumps as desired for how fast you want input and discharge to the room.