Vertical hydroponically plant-growing tower system

A vertical hydroponically plant-growing tower system comprising:

• a base unit comprising a water tank,
• wherein said water tank is designed to be connected to a water tank(s) of a nearby parallel tower system(s);
• a water-quality and water-flow control system, comprising:
• at least one water pump;
• at least one sensor for measuring at least one of the following parameters of the water within the water tank:
• pH, electric conductivity (EC), and temperature;
• a water treatment system;
• and
• at least one water chiller/heater;
• one or more rotatable growing hollow towers having planting niches in a zigzag orientation, each growing tower has a hording reservoir at its top from which water flow over the inner wall of the tower across said planting niches, wherein:
• said at least one water pump is designed to pump water from said water tank into said hording reservoir;
• and
• said growing hollow towers can be rotated to thereby enable access to the planting niches located on all sides of the growing tower;
• a hollow tube connected to the base unit at its center, said hollow tube having an opening at its top allowing air to enter the tube, and a bottom opening allowing the air to flow through the tube and onto the water within said water tank;
• a first light source located within said hollow tube;
• a second light source located onto each one of said one or more growing towers;
• and
• at least one ventilation unit designed to push air through the upper opening of said hollow tube across said first light source and into said water tank;
• wherein:
• the passage of air through the hollow tube enables delivering any heat that might be generated by said first light source to the water in said water tank instead of to the environment, thereby enabling the water to adsorb said heat for later chilling by said at least one water chiller/heater.