Standard Formula:

Use standard medium formula for growing plants in your garden. Formula of medium depends on container size, plants and other related system. Generally, the following standard formula is used. Standard formula is combination of one-third perlite, one-third vermiculite, and one-third of organic potting soil. You can also use hundred percent organic soils with mixture instead of organic potting soil. This formula is used for upper section in the ebb and flow organic hydroponic gardening. This formula has greater capacity to hold water and nutrients. It allows to bound roots around it. Plants will get enough air, water and solution as well. It also keeps water cleaning and can be used again for gardening.

You can also mix other organic nutrients in the formula such as worm casting. Sometimes if you do not like to mix liquid nutrients then mix liquid into half cup of water and poured across upper medium section. You may also allow spreading organic nutrients on top of the upper section and water to the plants. Any method can provide proper nutrients to the roots of the plants. This kind of soil system should be treated as we treat standard soil containers.

The light should be provided to the garden at least once or twice in a day when you use mix formula in organic garden (lighting system needs for both system i.e. using standard containers and mixing formulas). It means if sun may not provide proper temperature to the plants then use artificial lighting system in garden. As you know plants need light to convert carbon dioxide into oxygen. They also need light to develop color and growth. Artificial lights also increase the water and nutrients holding capacity of nutrients.

Downward small drain of nutrients into reservoir can be allowed. But large volume of water into reservoir will not allowed, because in large volume of water nutrients also runs down into reservoir with faster flowing water and plants will not get proper time or to absorb nutrients. So water flow should be proper that plants will get proper time to soak up. Change water reservoir once every week. Changing water reservoir depends on your management system. If you keep them clean you can change it once every two weeks.