Basic Introduction

iAVs, stands for Integrated Aqua~Vegeculture System, it is a method of growing crops and fish together in a closed-loop system. It is also referred to as Sandponics, and Sandgardening. The system uses sand, which acts as a biofilter as well as a mechanical filter, to remove waste from the fish tank. The waste is deposited in the furrows of the sand bed and converted by bacteria into plant-available nutrients.

Supplementary fertilization and/or additional filtration is not needed.

To build an iAVs system, you will need a fish tank, a sand biofilter/grow bed, and a water pump to circulate the water. The plants are fed for 15 minutes every 2 hours during the day, which makes it ideal for off-grid use. The plants are not watered at night.

One of the most important factors in iAVs is to keep the PH at 6.4.

It is important to find the right type of sand, and to test it before using it otherwise the system will clog. Horticultural sand, often called sharp sand has a structure with lots of air gaps, meaning it is strong enough to support the plants, but it also ensures an abundance of oxygen. The oxygen benefits the plant roots, and is used as a fuel source for microbes.

Running the system involves monitoring water quality, feeding the fish, and harvesting the crops.

iAVs are designed to be sustainable, productive, and efficient, with minimal water consumption and energy requirements. It generates no waste that is not 100% recyclable and can be scaled from the family or village to commercial enterprises.



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