I have plants in my office - the problem is that my days vary wildly and sometimes I forget or don't have time to water the plants. I looked for an automatic house plant watering system and they were very expensive ($49-$100) and I couldn't be sure of the quality.
I was walking in Wal*Mart one evening and went past the pet asile. I picked up some inexpensive aquarium supplies with the intent of putting together my plant watering system. I also went to the hardware asile and picked up a 24 hour light timer. In the end I had to go to a pet specalist store to get the valves that I needed to get it to work.
Here is my supply list
25' Airline Tubing ($2)
4 Gallon Bucket ($2)
Aquarium air pump ($10) - I got a dual line mode, beefier the better (not pictured in the instructable)
24 hour timer ($4) - Originally I used a 1 hour timer, but I found a 30 minute timer that worked better
Lee's Airline Control Kit ($4) - Cat no. 14103 - This is the perfect set for this project - it contains 4 Tee junctions and 5 valves. The valves are inline and all plastic.
Check Valve (Free) - This should come with your pump and is very important for safety (not shown in pictures)
Step 1: Prepare the junction and valve
You may have a different step if you are using a different type of valve and/or junction. The nice thing about the Lee's product is that it is modular. First, take the valve and inspect it - the valve is in three parts, the screw adjuster, the valve body and then another little connector. Pull the connector out - I used my teeth :)
Then take the tee junction and press the valve body on to the perpendicular part of the tee.
If you have a different type of junction or inline vavle you made need to fashion a small length of hose to join the tee and the valve - it'll work just fine.