Home Made Aeroponics Question

I've made a small tank into an aeroponics chamber in which the roots will grow inside no medium but clouds.

I have a mini diffuser or mini nebler, see picture below. I put that in a refilling plastic container that maintains a constant water level. Now basically the plants will be suspended by a sponge at the roots. I have a small fan that will run at the same time to move the fog though out the tank.

The attached picture is a diagram I have drawn



and this is a picture of the diffuser in the tank


Since the roots will be receiving a fog for water, I was wondering how long and how many times a day I should run the little device, "Nebler" as it were. Ive heard things on 3 times a day for 15 minutes, keeping it running constantly, and so on. Thanks

Sorry for the doublepost, I wasn't getting the response I was looking for in the newbie section

So then just bump your old thread! Do you think your going to get the responses you want by double posting and annoying people?

Annoying? I said I apologized for double posting, but I figured the Experts of this forum wouldn't visit the newbie second often enough for me to get a response in the time frame that I need it. And as far as annoying people, I'm sure posting my "Help question" on a project that I've been working on for several months, twice , isn't going to annoy very many more people than it already has being bumped in the original forum.

Besides, the first 5 responses were "Thats pretty cool", which I enjoy, but leaves me just as confused as I was when I posted it.
So sorry for annoying you so much that you had to post about it in my thread!

Any actual criticism/help for my project would be appreciated, but if its bothering you that much, don't click on a topic you have already read if you see it pop up somewhere else.

Thanks to anyone who can actually give me some guidance
~Jamie

i found a link for homemade aeroponics and it said 15min on 45 min off
Easy to Make Homemade Aeroponics Cloner
and if this dont help go ask your local hydro shop or search the net

Nice link dogs of war. Tons of useful info.