Rain barrel irrigation

heavyoilguy(Z2 ALBERTA)November 2, 2010

Hi all.

This is what I would like to do , any comments and suggestions would be greatly appreciated,

I would ike to water my greenhouse with a 3 (45 gal barrel system connected together ).These are approx 3' off the ground. I need to water 1 bed 5' x 22' and 1 bed 2' x 32', so far I have been manually watering with a hose and spigot attached to the barrels , due to the length of time involved , and sometimes being away , it has a tendancy to dry out rather quickly,

so i would like to hook up some kind of pump and timer and drip system, I have not tried the drip system as is because there is only about 1-1/2 psi , and i dont think it is enough , any idea on what kind of pump to use would be great, Thanks

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lehua49

hog,

A small submersible pump might be what you are looking for or a transfer pump outside your barrels. What flow and pressure would you need. Aloha

    Bookmark   November 2, 2010 at 7:40PM
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heavyoilguy(Z2 ALBERTA)

Lehua,
I was thinking 25-30gph, and probably around 15-20 psi for drip irrigation ??

    Bookmark   November 3, 2010 at 9:07AM
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Michael

Here is a 12v model that might do the trick, it's a diaphragm pump though and I'm guessing you'd prefer 110v instead - http://www.grainger.com/Grainger/FLOJET-Potable-Water-Supply-Pump-2XE90

I am unaccustomed to dealing with pumps that small except for metering fluids, many metering pumps are much more expensive than the one in the link above.

A small peristaltic ("squeeze") pump may fit the bill though the price could be out of reach. I've used several diaphragm pumps for metering bleach and polyphosphates over the years and have found them to be troublesome, they have all been replaced with peristaltic pumps.

    Bookmark   November 3, 2010 at 7:49PM
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lehua49

hog,

First design how many emitter heads you need and what the flow rate will be for the heads. Add that up and see what your gpm or gph rate you will need. Also decide how long you want a zone to irrigate. Your gph will decide how long it will take to irrigate. Also calculate time and rate to get volume of water needed per irrigation cycle per zone. compare that with your storage capacity and see how long your storage will last. In other words, start with your needs and work backward to design your distribution and then your storage amount. Aloha

    Bookmark   November 3, 2010 at 11:07PM
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