Passive hydroponics is easily one of the simplest hydroponic designs for home growers. Also called semi-hydroponics or passive sub irrigation, this technique does not utilize any dirt but rather inert mediums are utilized as growing mediums.
These growing medium deliver all the mineral herbs need from a tank below. Passive sub irrigation designs combine simple install with convenient daily maintenance.
Passive sub irrigation designs use
- growing mediums only to provide crops a foundation for growth and to supply nutrient solution, most do not give any minerals themselves
- different materials which can be used such as rock wool, coir, vermiculite, and perlite
- materials are able to transport solution upwards through capillary action
- depending on the absorption rate of various materials systems could be installed to operate with little regular maintenance
Cultivation mediums important
- they provide water but also have to permit space for fresh air to be circulated around the root systems
- the mixture of nutrients and fresh air is what assists plants develop and stay healthy
- species of crops can have various mineral and oxygen needs
- gardeners normally mix varied materials to produce the appropriate environment.
Passive Systems Must Be Regulated and Maintained
- cleaning is vital for passive hydroponic designs to make sure that no bacteria or fungus develops
- static designs minerals can accumulate throughout the reservoirs and cultivation tanks
- rinsing out equipment between crops could make systems last longer and keep the quality of plants cultivated.