LOL! I had forgotten about doing this post.

I'd say that that a cup of ONA, with the other parts water, lasts me about 4 weeks or so.

Hey, just out of curiosity, has anyone else built something like this? I've been using mine now for a long time, and its perfect. When ppl come over, they always comment that our place smells "clean."

I have something similar in conjuction with a carbon air scrubber. The ONA sits infront and behind the fan, but it works. I may make modifications like yours. Thats the way to go.

using the soilmoist crystals REALLY makes the ONA last longer.

I built it almsot exactly to your spces, except I used a 3 gallon bucket and a Honeywell fan. The smell was obliterated in under 5 minutes, although I'm not in full bloom flowering yet...

Just wanted this bumped, as i see many peeps linking that kitty litter thingy, this is prob much better for only a few bucks more...

This is a much better than kitty litter. This actually can be used anywhere in the house odors accumulate... (Garage, etc.)

Bumpity bump for Nerdule.

Thanks GB...

Nerdule

This deserves bumping because it is so dogone well said and photographically documented.
What a useful post.
I shall try it post-haste..

ran into this post a while ago and thought what the hell and gave it a try.for as simple as it is the results were astounding.
if anyone is worried about smell this is a very goodremedy and you cant beat the cost.

Here is mine...I honestly would't have been able to grow in my last location without this idea.

Glad its been workin as for others as it does for me! Honored to share info with the likes of you folks.