If you can't find the right size, try experimenting with different sized screens, and different thicknesses of the carbon layer, that will allow air to pass and still work.
For example, you could run a couple inches thick of a huge particle size, but maybe only about a centimeter of a small one. Small particles=more surface area exposed to bind contaminants; it is a matter of finding the happy medium (no pun intended!!!).
stinkyattic Reviewed by stinkyattic on . Source for Activated Carbon? For making a DIY scrubber. In my opinion, this has the absolute best chance of high success. Why? Because in industrial, medical, pharmaceutical applications, they use carbon. Enormously effective at bonding to organic odors, and that's all we're dealing with here. The DIY tutorials are describing great rigs. They should work fine. The problem is the correct carbon. Specifically the right carbon particle size. We are looking to scrub air, not water. Therefore we need a larger particle Rating: 5