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How the CWI Works
The CWI
reservoir is filled every 1 to 4 weeks (2-4 weeks interior, 1-3 weeks
exterior). The fill hole is closed with a stopper, creating a
vacuum-tight closed reservoir.
When the soil is dry
(indicating the plant needs water), the moisture sensor allows air to
pass through the tube into the reservoir, allowing water to flow into
the container from the bottom. The water wicks up through the soil,
irrigating the plant.
As the soil becomes
moist, the sensor (planted in the soil 1/3 to 1/2 way down the
container) absorbs water. When wet, it acts like a valve, blocking the
flow of air through the tube. A vacuum is created above the reservoir,
preventing further watering until the soil begins to dry again.
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- Bioguard Root Control Squares - A simple way of
preventing roots from growing into water reservoir,
extending plant life.
- HM-10 Time Release Fertilizer for Sub-Irrigation
Systems - Releases N, P, K, and 10 trace minerals as
they are depleted from the water reservoir. Simple to apply,
lasts 6 months per application, no root burn.
- CWI Field Manuals - In
English or Spanish, available in regular heavy duty paper or
laminated for durability in the field.
- Funnels - Inexpensive plastic funnels or high-speed
metal funnels for use with all watering cans.
- CWI Spare Parts -
Spare stoppers, sensors and grommets for use with all CWI
sizes.
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