So I was up for another night reading about SIPS. I plan on doing a 2 bucket system. 

http://www.globalbuckets.org/

But instead of using the plastic cup I'm going to use a hydroponic plastic net pot.

http://figs4funforum.websitetoolbox.com/post?id=5732589

My only question is in all of these systems where should the drain go? Is the following picture correct?



The drain hole is to go below the platform/Bucket? Basically below the soil line in all SIP setups?

Right, just below the top bucket - you want a tiny space of air below the top bucket when the bottom reservoir is full.

Sal,
I would also line the cup with burlap to keep the dirt from spilling into the reservoir. That is what I use. The burlap is porous and is a great way of keeping your wick in tact. I have 6 x 5 gallon SIPs that I have made and they work great. I agree with Ed, put a 1/4" hole a bit below the top of your basket. That still gives you a very large reservoir.

Thanks guys... Its the one small detail that's usually left out. I was going to use nylon netting but I have a ton of burlap so I can use that.

A empty K CUP has a built-in filter. They have two different sizes too. I never made a sip cup l8ke this just a idea that poped in my head while reading threw this topic.

Even the refillable Kcup type would work also. When I get home I'll take some pictures of the netted pot I plan on using.. I think it was 1$ if that.. I might use 2. I plan on documenting the Build..

It might be best for me to try the system out on a tomato plant to see how many netted pots are needed to keep the soil moist. Also soil blends.
I'm using Pro-mix currently and plan on using Ocean Forest from Foxfarm because it will Wick the water better I think. Right now I'm using Foxfarm big bloom for my small cuttings. Soon I'll put them on Foxfarm Grow Big.

Thanks for the link.. It's a little different not much.

In the first link you gave me to FB what prevents the soil from going through the net?

I'll take a picture of what I built yesterday. Also I plan on using either ProMix or Ocean Forest from Foxfarms in the 5 gal buckets. What are you guys using in your mixes?

The best SIPs i've made were single bucket with an inverted Microwave cover (see image below) in the bottom.  I used a hole puncher to create more side holes in the microwave cover.  Cut a larger hole for the fill tube to go down in. put in a drain tube and done.  I think I posted pics of it somewhere here before.  If I find it, i'll link to it.


PS. Sorry that image is so large.  I got found these at DollarTree for $1 each.

Here's the previous link I was thinking about.  Just mentions how I made it, but no pics of how it's put together.

Here is the start of my sip minus holes on the bottom pail.. I hope the Net pot is big enough. I got it from a Hydroponic store



Here's a picture for size comparison



ThaiFig..I may play around with filling the net pot with Fine Cocopeat .. Its likes a sponge. 

ThaiFig I'm going to do exactly what you suggest. I made 3 SIPS. I will use them all for testing before I plant in them. 1 will be used to experiment with what you suggested.  I assume if something is too wet add more Perlite? I'll take pictures this weekend.