Quote Originally Posted by primster
hey
i'm going to buy a co2 tank but i have a question ... do i need a regulator to get co2 into the my grow box or could i just put the tank in the box and put it on a low presure so it comes out constantly ? what would work ????
No, the tank would freeze and you could not regulate the amount. You should do some research on how to use CO² properly before you hurt yourself. High levels of CO² are great for your plant (like above 1500 ppm to 1800 ppm) but they will kill you. You do need a regulator and special feed lines that will not freeze on you. You also need a delivery system (a way to get it to where it need to be) and you room needs to be sealed tight no air in and no air out. You can use a timer to regulate the CO² but you must do the math and work out how long to run the gas to reach the PPM you choose. Then you need to keep it at that level for as long as the lights are on. Then you evacuate the room and exchange the air.