I got my watering system finished. The Home Despot employees were mostly useless, as always, so I had to figure this out myself - there may be a better way. All together I spent about $25 on the whole thing, not counting the drill I used to make the hole in the bucket.
I started with a normal bucket, then used a washer as a guide of how big, and where to make the hole. At the base of the whole setup(sorry I didn't take pics before) is a threaded connection piece that both of the white pvc pieces can screw onto. Make sure to put some cheap teflon tape on all the threads to avoid leaks. I put a washer that feels like a pencil eraser of each side of the bucket, to make a water-tight seal. The inside pvc piece is just a 1" piece of threaded pvc, which is just to hold the inside on, and a flow control valve(fcv) to allowme to turn off the water at the bucket, for when I want to remove the hose. I put a barbed end onto the fcv, to receive the tubing, and put some teflon tape on here to make the fit better. The tubing (I chose to use 5/8 inner diameter(ID) / 3/4 outer diameter(OD) tubing, because it fit my wand well, and was thin enough to flex and pinch well. You could also use a hose clamp to pinch the tubing down onto the barbed spout, but I want to be able to pull off and put on easily. The hose continues 10ft. to my wand, where I used a hose clamp to pinch it down tight. That's it.
With the fcv closed, I can fill the bucket with water and nutes(leave a bit of air space to allow room to mix - I even threw a couple blender balls in there for good measure), and with the tubing removed, it is pretty easy to shake up for good mixing. I put the bucket up higher than the wand and turn the fcv on. The water flows down to the wand, where I can control the flow with the blue thumb slider. The handle telescopes, to give me just the right length. This can be mounted onto a 5,10,35 gal bucket, or most any res you have. Just remember, even the lowest part of the hose has to be higher than your hand level to work, and water weighs 8#'s a gal, that means a full 5gal will turn into a 40# wrecking ball if you tip it over, so be careful with placing and using this!
Here's the general assembly pics:
See how you can control the flow down to a tiny trickle. This is not even the lowest I can get it, you can have almost a drip trickling out.
It's so easy to get through all that growth now!!
Here's what I've been enjoying as of late, a nice bowl of hash: