What I ended up doing was constructing basically a "table" for the system to sit on. The weight of the water in the drain pipe makes it heavy enough for it to easily stay on without a problem. The nice thing about this is that it can be easily scaled to almost any size and all the instructions stay the same (except for the actual construction of the system of course) - there would be no need to change the code...maybe just things like adding more lights, fans, etc.

I don't have a digital copy of all the dimensions of the pipe if you're looking to make a replica of what I've done, but I'll try to get everything entered in within the next couple of days.

For the reservoir, you'll need to drill two holes for the float sensors - one at the very lowest your water can be and one at the top - and also a hole for the solenoid to fit in (which you will glue in). To connect a garden hose to the solenoid, I used 3/4" hose to pipe adapter made by Orbit (found at Home Depot) and a 3/4" to 1/2" reducer to get it down to the right size.

Once you've constructed the frame, you'll want to wrap the entire thing in a transparent plastic, of which you'll have to cut out a couple holes for your fans. With the drain pipe, you'll want to drill out about 3 1/2" or so holes with a hole saw so your pots will fit in. Cut a hole in each end of the drain pipe - one is where water is pumped in from the reservoir, the other is where water drains out back in to the reservoir to be recirculated.

I never got finished with the container for everything to fit into, however, I'm sure that shouldn't be a problem for most of you to figure out. I took the cardboard that my relay shield came in and am working on getting everything to fit in there, since that's a really easy way to put it all together, but you can use whatever you'd like.