The passive hydroponic vegetable gardening system is the simplest of the systems, as it requires minimal maintenance on the part of the gardener. The steps to build a passive system are fairly straightforward:
1. A large container is obtained and filled with nutrient solution.
2. The lid to the container is modified to allow the plastic planters to be suspended the in the container so that the base well within the solution.
3. Airline stones and airline hose are placed so that the stones will be directly under the plastic planters.
4. A planting medium is placed in the planters and the plants are planted into the medium.
5. The roots of the plants are submerged completely with the nutrient solution
6. An airpump is connected to the airline hose and bubbles are permitted to agitate the solution under the plants.
Since this method does not expose the roots of the plants to any air, oxygen must be introduced into the solution. The air stones underneath the plastic planters accomplish this.
This is the basic setup for the passive system. Once built, the other factors to consider are the pH of the nutrient solution, the temperature of the solution, and the quality of lighting that the system is receiving.
Check back for more information on hydroponic vegetable gardening.
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