Slowly hydroponics is taking over traditional soil growing method especially in countries where land or weather conditions are not suitable for plant growth. Good hydroponics gardening is supported by efficient hydroponics system. These hydroponic systems are broadly classified into two main categories – active and passive hydroponics system. Active hydroponic systems bring faster and healthier growth while passive hydroponic systems are comparatively easier to construct and maintain.
Passive hydroponic systems are influenced by wick systems to supply nutrients to the roots of your plants. It simply means that nutrients which are originally in fluid solution are allowed to travel through the growing medium to reach the roots. Although passive system is easy to build and maintain because it has no pump or any moving tool, it tends to keep the roots of the plants constantly wet and moist. This discourages proper flow of oxygen in the garden as a result holding back the full growth of the plant. Another limitation of this hydroponics system is that the nutrients that roots don’t absorb are not recovered.
Simple passive hydroponics systems
A simple passive hydroponics system includes a 5 gallon reservoir filled with water with appropriate amount of nutrients in it and plants to float inside. While using this basic hydroponic system, ensure that plants don’t sink to lower level otherwise they’ll drown. This is an ideal and effective method to grow lettuce.
Another classic passive hydroponic system that you can make on your own would be to take a jar and fill nutrient solution in it. You can block the neck of the jar with cotton and allow plant to float through the cotton wad. Aquaponics is also considered as a popular passive hydroponics system.
Passive hydroponics may add excess humidity due to evaporation. Also, it’s very important to thoroughly wash the whole system on regular basis to avoid salt accumulation. Before you decide which plant to grow in your passive hydroponics system it’s very important to understand that plants that need drying after each watering cycle are not suitable for passive hydroponics systems. Therefore choose plants which can grow well in atmosphere where there is enough moisture, for instance orchids and bromeliads.