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Permacultura Aralar
Permacultura Aralar
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Water Tanks finished (II)

Project: Permacultura Aralar

Posted by Victor Barahona about 12 years ago

Finally we've finished our water tanks with 2000 liters. A few improvements and all is fine now.

At the beginning of summer Permaculture Aralar have installed two water tanks of 1000 liters each one, in the highest point of the farm to irrigate by gravity (see previous entry). We had several things pending and we’ve finished recently. The most important thing was to protect two tanks from sunlight to prevent algae growing inside them. At this way the water stays fresh and clean and prevent overheating in summer, both objectives were achieved placing a sheet of geotextile. This is the same material used in soil to prevent weeds from growing. They’re green, so this help to integrated them into the environment. We wished to protect the tanks through a hedge instead of using plastic, in the future we will hope to solve in this way, but at this point and waiting for the vegetation to grow around this is the most adequate solution, and all this material we can reused in the future. Here is a picture with the tanks before installing the geotextile and the valve system for irrigation:

Tanks in their site

And here is finished:

Protection against the sunlight

Here is the link between two tanks for sharing water , and 4 outputs prepared to remove them. At right is already in use to irrigate the kiwis, the rest are used for irrigation in the future.

Irrigation Scheduler

Finally, a modification of the plugs from the tanks that allows entry and exit of air at the top, this allows water in two tanks stays at  same level, and in/out flow is more easier. We have done this drilling several holes in each plug and putting up a very fine mesh to prevent entry of insects. This detail is ignored ourselves at the beginning, we thought that plugs on the tank was not completely sealed and allow air to pass, but we watched it cost to fill and maintain the same level. With this action the problem was solved.

Improving tank tops

We have been using the tanks for two or three months and work very well. The next step to take is implement the other three outputs and later we will pump water by hydraulic ram, now we do it with an electric pump, this operation is made once a month during two hours. With the hydraulic ram will take longer but will be free , we will use only the slope (about 3 meters) to pump 10m high where tanks are located. It will discuss in another article.

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