If you are set on having a pump to drive the water, then your besst bet is to follow what bighurt explained and go with one of the online companies to get your pump.

On the other hand you could make the whole thing at a hardware store if you dont mind a little work once a week.
You could use a pump sprayer and cut off the wand. Using fittings in the plumbing section connect the hose that attached to the wand to a garden hose timer. Again using connections from the pumbing section connect the garden hose timer to your misting heads. I am almost positive that most home depots carry a porch misting system so you will have access to misting nozzels. If you want to go the pump sprayer method I highly suggest visiting barrs.com. They have plans on their site, and they sell all of the parts you need (not expensive) to make a system like this asside from the garden hose timer and the pump sprayer.

The difference between the two setups is two things ... price and automation. The pump driven system is significantly more expensive (usually around $300 ) but you only need to fill it up and thats it. The pump sprayer driven system is significantly cheaper (cost me about $60 for everything and I bought a good digital garden hose timer for $30) but you will need to pump the system to presurize it during the week.

I used a 1 gallon sprayer with 3 misting nozzels. I set the timer to go off three times a day for 1 min intervals. With this setting I had to fill the sprayer once a week and pump it an additional time in the middle of the week. To me this minimal amount more effot was worth the savings.
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- Jason F.

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