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Does Sand clog?
Sand usually doesn’t block up in well-designed and properly managed iAVs.
Here are the main points about sand blocking in iAVs:
– The right type of sand for iAVs, especially when used with furrows and regular watering, doesn’t tend to clog.
– The system uses coarse sand, which has bigger particles (between 0.4mm and 1.2mm). This allows water to drain quickly.
– It’s important to use the recommended type and size of sand, ensuring it contains no silt or clay.
– If the right sand isn’t used, problems like clogging, poor drainage, and areas without oxygen can happen.
– Features like good drainage, large pore spaces, slightly sloped grow beds, a drying period of 90 minutes, and a lot of microbes help keep oxygen levels high and avoid areas without oxygen.
– Instead of moving down, solids shift horizontally on the sand’s surface, preventing sand and drain outlets from getting blocked.
– Some systems have been successfully running for 20 years without any clogging issues.
– The sand needs to drain thoroughly to keep plants from getting too wet.
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1 Reply
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Not if you have the right sizes. If you use very fine sand such as the play sand, yes. I started with play sand but later on changed to the right sizes of sand.
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