Pic1: Rubbermaid tub I chose. You can use anything, but would not go less than this if you want functionality. Keep in mind you have to fill these mamas once per week.
Pic2: Parts you'll need. That's a 1/2 brass nipple and a brass garden hose type connector that has inner threads to screw onto the nipple. You can use any rubber washer as long as they fit snug so there aren't any leaks. You can get away with only one washer on the inside if it is a good one.
Pic3: This unit come from Sear's $29. Runs on two AA batteries. Get ONLY this unit or one shaped like this. Others units need water pressure to work. (They are not shaped like this, but are cylindrical.)
Pic4: Put a hole in the tub about an inch from the bottom. Be very careful here. Use a 1/2 drill bit and then test the nipple and then ream the hole out with the bit to make it a little bigger until the brass nipple screws into the hole snugly. While reaming keep the hole round, and go a little at a time, testing the nipple to see if it will screw in. Thread the nipple through the hole, you want it SNUG. Push hard and screw at the same time till it threads right into the hole in the side of the tub.
Pic5: Put the nut as far in as it will go on the nipple and put the washer on.
Pic6: Screw it in from the INSIDE. Should look just like this.
Pic7: On the outside, put on a washer (if you have 2) and hand tighten the hose connector. No need to smash the washers with a wrench.
Pic8: The unit in action. I will show you in my next post the distribution system, I have some tubing and a brass thingy that splits it to four plants. It does not blast water and you don't want it to. The whole thing is gravity fed.
Pics 9 & 10: The plants it will be taking care of.