Description: Electrical controls for irrigation systems; apparatus in the nature of gas sensors for determining gas concentration and electromechanical controllers for sensing and controlling dissolved oxygen for horticultural use; Conduits and conduit fittings of plastic for horticultural irrigation use; Irrigation conduits and conduit fittings of metal for horticultural use; Heating systems comprised of boilers, heat exchangers, pumps, distribution piping, and components thereof, namely, thermal transfer tubing array, tubing and distribution headers therefor; heating systems comprised of boilers, heat exchangers, pumps, distribution piping, and components thereof, namely, thermal transfer tubing array, tubing and distribution headers therefor for horticultural use; environmental control equipment in the nature of heating systems comprised of boilers, heat exchangers, pumps, distribution piping, and components thereof, namely, thermal transfer tubing array, tubing and distribution headers therefor for greenhouses; environmental control equipment in the nature of hydronic water chillers, dehumidifiers and CO2 gas generators for greenhouses; environmental control equipment in the nature of heating systems comprised of boilers, heat exchangers, pumps, distribution piping, and components thereof, namely, thermal transfer tubing array, tubing and distribution headers therefor for horticultural use; environmental control equipment in the nature of hydronic water chillers, dehumidifiers and carbon dioxide gas generators and diffusers for horticultural use; water treatment equipment, namely, apparatus in the nature of gas infusers for treatment of irrigation water by increasing its dissolved oxygen content; apparatus for heating irrigation water, namely, hot water heating installations; apparatus for cooling irrigation water, namely, irrigation water chillers and cooling installations for water; oxygen generators for processing water by increasing oxygen content in the water; water treatment equipment in the nature of irrigation water chillers; water treatment equipment in the nature of apparatus for infusing gas into liquid for treating irrigation water; water treatment equipment in the nature of gas infusers for treatment of irrigation water; water treatment equipment for treating irrigation water in the nature of gas infusers for infusing oxygen into water used for irrigating crops and plants; dehumidifiers for horticultural use; air conditioning apparatus for horticultural use; carbon dioxide enhancement systems in the nature of carbon dioxide generators and diffusers for horticultural use; Services for the horticultural industry, namely, design of heating systems, cooling systems, irrigation systems, air conditioning systems, and nutrient management systems
